Which element has the chemical symbol Ni?

Nickel Click to see the answer

CH4 is the chemical symbol for which gas?

Methane

Which of these building materials is damaged by acid rain?

Limestone

Which element has the chemical symbol Ti?

Thallium

What state is fluorine in at room temperature?

Gas

Which of these is NOT true of calcium?

Brown in colour

What in particular is it that gives fireworks their myriad of colors?

Metallic compounds Click to see the answer

Where do most minerals come from?

Beneath Earth's crust

What name is given to atoms of the same element that have different atomic weights?

Isotopes

Most plastics are what?

Synthetic

If a chemical compound's name ends in '-ate' as in 'calcium carbonate' which element does it contain?

Oxygen

Calcium is displayed on the Periodic Tables as?

Ca

As a solid melts what happens to the temperature?

Stays the same

What is the process called when some molecules of water turn into gas?

Evaporation

When solids reach their melting points they become what?

Liquids

How many neutrons is there in a Hydrogen (H) atom?

0 Click to see the answer

What is the common name for the compound with the chemical formula NaHCO3?

Baking soda

Chlorine, bromine and iodine are members of which group of chemical elements?

Halogens

The oil used in the froth floatation process is?

Pine Oil

Which of these is NOT true of gases?

Cannot be squashed

H2O contains how many elements?

Two

What is a benefit of a limestone quarry?

Local employment

Substances initially involved in a chemical reaction are known as what?

Reactants

Water is made up of hydrogen and what else?

Oxygen

The solid state of water is known as what?

Ice

What type of substances do we get from substances called 'ores'?

Metals

Which is most dense?

Solids

The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is known as who's law?

Henry's Click to see the answer

What chemical element has the symbol Pb?

Lead

When water is cooled what happens?

Expand

Which of these is not an ingredient in concrete?

Clay

Which is the only metal that is in liquid form at room temperature?

Mercury

Which element has the atomic number 21?

Scandium

The property of lasting a long time before wearing out is know as what?

Durability

Which of these liquids boils at 80.1 C?

Benzene

Spectroscopy is a branch of chemistry concerning what?

Electromagnetic Radiation

Of these elements, which is the most toxic to humans?

Lead

Why is tungsten a good metal for electric light bulb filaments?

High melting point

What is the opposite of alkaline?

Acid

Why is titanium expensive to extract from its ore?

Many stages

The major constituent of air is which gas?

Nitrogen

How many forms of radioactivity are there?

3

Why can gold be found in the Earth's crust in its native state?

It's unreactive Click to see the answer

What is the pH value of seawater?

7.5

In 2009, 13 years after it was first discovered, what name was given to chemical element 112 in the Periodic Table?

Copernicium

What substances can convection happen in?

Liquids and gases

Steel is a what?

Alloy

Which of these chemicals is inert?

Krypton

What is an extremely poisonous oily liquid alkaloid that turns brown on exposure to air?

Nicotine

The left hand side of the Periodic tables is made up of?

Alkali Metals

Which colorless liquid is found in all living matter?

Water

How many natural noble gases are there?

6

What is considered to be the opposite of acidic?

Alkaline

S is the symbol of which chemical element?

Sulphur

What is the chemical symbol for carbon?

C

Which of these common gases is made up from more than one chemical element?

Carbon dioxide

Which type of plastic can be molded, melted, and then remolded?

Thermoplastics

At standard temperature and pressure, how many of the 118 elements in the Periodic Table are liquids?

3

In chemistry, what name is given to a substance which forms a caustic or corrosive solution in water?

Alkali

In chemistry, what name is given to the smallest particle of a substance that can exist on its own?

Molecule

Which of these metals is stored in paraffin to prevent it spontaneously igniting?

Sodium Click to see the answer

Pb is the symbol of which chemical element?

Lead

Europium originated from the name of which Continent?

Europe

Asbestos, feldspar and clay are all examples of which type of mineral?

Silicate

Which of these unreactive metals does not need to be extracted from compounds?

Gold

High strength in tension is a good property for a material used to make what?

Rope

Limestone heated with clay forms what substance?

Cement

Something without a defined shape or volume is known as?

A Gas

When water is heated it does what?

Evaporates

Can diamonds be made synthetically?

Yes

In chemistry, the change of state called 'sublimation' happens between which of these?

Solid and gas

Which silvery-white metal has the chemical symbol Pd?

Palladium

The most commonly used bleaching agent is?

Chlorine

What do the letters 'AMU' stand for?

Atomic Mass Unit

How can calcium carbonate be decomposed?

Heat

Which of these is a chemical element?

Bromine

What is the common British name for zinc carbonate?

Calamine

The most extensive, commercially useful source of thorium as monazite sand occurs in India at?

Travancore Coast

The metal that is used as a catalyst in the hydrogenation of oils is?

Nickel

Which of the following is not a greenhouse gas?

Nitrogen

Which is an example of a chemical reaction?

Nails rusting

Which compound has the chemical formula H2O?

Water Click to see the answer

The heat energy produced when the human body metabolises 1 gram of fat is?

39 KJ

Naturally occurring rocks that provide a starting point for the manufacture of metals are what?

Ores

The change in a substance from a liquid to a solid state is called what?

Freezing

Over long periods while under extreme heat and pressure, graphite turns into what?

Diamond

What gas is given off by pouring dilute euphoric acid on to granulated zinc?

Hydrogen

If liquid Nitrogen (H2) was poured out at room temperature it would?

Evaporate

What keeps the water in swimming pools clean?

Chlorine

Which of these elements is more predominant in the atmosphere?

Neon

What is the pH value of toothpaste?

9.8

PVC is made up of carbon, hydrogen and what else?

Chlorine

What type of molecule is CH3OH?

Alcohol

Which of these is NOT an elemental gas?

Ammonia

In chemistry, what name is given to a positively charged ion?

Cation

What is the second element in the periodic table?

Helium

Which of the following needs to be constant for enzymes to work?

Temperature

Helium came from the Greek word 'Helios' meaning what?

Sun

The most abundant protein in the human body is?

Collagen

What is the chemical symbol for Magnesium?

Mg

In chemistry what does a Bu group indicate

Butane

What is the chemical symbol for uranium?

U

In chemistry, what color flame is produced by a compound containing sodium?

Orange

What name is given to a substance which reacts with an acid to form a salt plus water?

Base

Which metal makes up approximately 90% of the alloy, Pinchbeck?

Copper

The two main metals in the earth's core are nickel and what?

Iron Click to see the answer

Molecules are made up of?

Atoms

What do we call the compounds that contain only carbon and hydrogen atoms?

Hydrocarbons

Which of these elements is not a noble gas?

Chlorine

Which mixture is typically made up of 75% potassium nitrate, 13% charcoal and 12% sulphur?

Gunpowder

What color vapour does iodine give off when heated?

Purple

What is formed when ethene reacts with steam?

Ethanol

What is the missing form of radioactivity, Alpha, Beta and …?

Gamma

On the pH scale, what is the value of water?

Seven

Which is an example of a crystal lattice?

Diamond

What is the most common use of Uranium?

Nuclear Energy

The periodic table is arranged in a series of columns, called what?

Groups

Which of these is not a metal?

Xenon

Which of these is a gas?

Argon

Which of these can be used as a test for carbon dioxide?

Limewater

At standard temperature and pressure, how many of the 118 elements in the Periodic Table are gases?

12

What is the chemical symbol for Gallium?

Ga

Crystals are made up of what?

Lattices

When a solid changes to a liquid it is called what?

Melting

Polyamide is better known as what?

Nylon

Which colorless, odourless light gas is used to lift airships?

Helium

HCl is what sort of compound?

Acid

Which of these is an important property of the material used to make tights?

Flexibility

What will happen to the pressure inside of a sealed tube if you raise the temperature?

Increase

Which gas has the chemical formula CH4?

Methane

Fossils are found mostly in which type of rock?

Sedimentary

What is the more common name for sodium hydroxide?

Caustic Soda

What name is given to an atom or group of atoms that carry an electrical charge?

Ion Click to see the answer

Which of these compounds can be used to neutralise acid?

Calcium hydroxide

Which gas is the second lightest element?

Helium

An acid is a substance that produces?

Hydrogen Ions In Water

Which process allows large hydrocarbons to be broken down into smaller hydrocarbons?

Cracking

Water freezes at what temperature?

0 degrees

What sort of elements combine to form an alloy?

Metals

What is the chemical symbol for Fermium?

Fm

A carcinogen is a chemical that can cause what?

Cancer

In degrees Celsius, at what temperature does the sea start to freeze?

-1.9

Pure water has a pH level of around what?

7

Which chemical element is the main constituent of photographic emulsions?

Silver

Which of these non-metals is a good conductor of electricity?

Graphite

Which number group in the Periodic Table contains oxygen?

6

Which of these is an acid?

Sulphuric

Which silvery-white metal has the chemical symbol Sn?

Tin

What is the chemical equation for calcium carbonate?

CaCO3

Which alloy is made from tin and lead?

Pewter

Which element comes between Mendelevium and Lawrencium in the Periodic Table?

Nobelium

Which acid gives the common stinging nettle its sting?

Formic

Oxygen, Carbon, Hydrogen and Nitrogen make up approximately what percentage of the human body?

96%

Robert Bunsen introduced what piece of laboratory equipment in 1855?

Bunsen Burner

Which of these have a positive charge?

Protons

Which of these metals is used to plate others to prevent corrosion?

Nickel

Which element in the Periodic Table has the lowest atomic weight?

Hydrogen

When was the element rutherfordium discovered?

1969

Which word is missing from the sentence: diamond and graphite are two main....of carbon?

Allotropes

When two objects are rubbed together and become charged, what moves between them?

Electrons

Which of these elements are yellow?

Sulphur

How is Sodium Hypochlorite more commonly known?

Bleach

What is the chemical symbol for Lawrencium?

Lr Click to see the answer

Which of these elements is always radioactive?

Plutonium

What two elements make up water?

Hydrogen & Oxygen

What is the ratio of hydrogen to nitrogen atoms in ammonia?

3 to 1

U is the symbol of which chemical element?

Uranium

What is dry ice made from?

Liquid nitrogen

Which chemical element has the symbol Ra?

Radium

Which of these gases is used in light bulbs because it doesn't burn?

Argon

Which pungent gas has the chemical formula NH3?

Ammonia

In chemical reactions, what name is given to the addition of hydrogen to an element or compound?

Reduction

When a gas reaches its condensation point it becomes a what?

Liquid

Name a force that keeps molecules together?

Attraction

How many electrons in a Hydrogen (H) atom?

1

When atoms and molecules cluster in a regular pattern they form?

A Solid

Gadolinium (Gd) is named after which chemist?

Johan Gadolin

What does a catalyst do to a reaction?

Speed it up

What temperature does water boil at when at sea level?

100 degrees

Who attempted to arrange the elements using the octave as a basis in 1864?

John Newlands

Which of these elements is a liquid at room temperature?

Bromine

Which two letters indicate a measure of the acidity or basicity of a substance?

pH

Who is famous for his work on periodic table?

Dmitri Mendeleev

The FDA has set a reference daily intake of how many minerals?

12

Acids have a pH where?

Below 7

Where on the periodic table would you located the noble gases?

Far Right

Marie Curie discovered which element, represented by Po on the Periodic Table?

Polonium

What name is given to the different levels of electrons that are found around an atomic nucleus?

Shells

What color flame do sodium compounds burn with?

Yellow

If a substance is weakly acidic, what color will it turn universal indicator?

Yellow

The periodic table is arranged in a series of rows, called what?

Periods

The vulcanization of rubber is known as what?

Thermoset

What is H2O more commonly known as?

Water

How do you produce calcium oxide from calcium carbonate?

Heat it

What two elements combine to make water?

Hydrogen and oxygen

What is the chemical symbol for Bromine?

Br Click to see the answer

At what number in the Periodic Table would you find Einsteinium?

99

Three of these chemicals are gaseous at room temperature, which is the odd one out?

Mercury

Which gas makes up 0.03 per cent of the air we breathe?

Carbon dioxide

Which element has the atomic number 1?

Hydrogen

Copper and tin mix to create which alloy?

Bronze

The mineral containing both magnesium and calcium is?

Dolomite Click to see the answer

A 'buckyball' is an allotrope of which element ?

Carbon

What industrial chemical is made by the Haber-Bosch process?

Ammonia

Approximately how many molecules thick is a piece of paper?

100000

The most abundant rare gas in the atmosphere is?

Argon

N is the symbol of which chemical element?

Nitrogen

Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be?

1:16:02

What happens to layers of metal ions when the metal is bent?

Slide over each other

Bronze is a mix of how many metals?

2

Which of these is a fundamental rule of chemistry?

Acid+Base -> Salt+Water Click to see the answer

How many chemical elements are there in the group known as the lanthanides?

15

Whereabouts does the group of elements known as the Actinides appear in the Periodic Table?

Bottom

Which crystalline hydrocarbon is used to make mothballs?

Naphthalene

Approximately how many different organic chemical compounds are currently known?

4000000

Which of these liquids boils at 78.2 C?

Ethanol

What is the pH value of ant venom?

2

When was the element bohrium discovered?

1976

What is the second most abundant element in the Universe?

Helium

By which name is the chemical with the formula D2O better known?

Heavy water

If iodine is dropped on food that contains starch, what color does it turn?

Dark blue

Incomplete combustion can produce black particles of what?

Carbon

Which of these gases is the densest?

Chlorine Click to see the answer

Which element is present in all organic compounds?

Carbon

How many different elements are there in CH3COOH?

3

In chemistry, the science of 'kinetics' studies the rate of what?

Chemical reaction

What is the chemical symbol for Cobalt?

Co

Which of the four sub-species of tiger has the alternative name, Amur?

Siberian

Which chemical element takes its name from the Greek word for the sun?

Helium

Steel is a mixture of iron with what else?

Carbon

What state is the chemical 'ethanol' at standard temperature and pressure?

Liquid

Which of these will melt at 57 degrees C?

Wax

Au is the chemical symbol for what?

Gold

Which adjective describes elements with a higher atomic number than uranium?

Transuranic

Which of these substances has a melting point of 197 degrees C?

PVC

What substance has the chemical formula NH3?

Ammonia

The carbon allotrope the 'buckyball' is named after Buckminster Fuller who is not a scientist but is a what?

Architect

Which process describes a solid converting to a gas without passing through a liquid state?

Sublimation Click to see the answer

What is the fourth most abundant element in the universe in terms of mass?

Carbon

The inherited traits of an organism are controlled by?

DNA Molecules

What is Hg the chemical symbol for?

Mercury

Which of these elements has the lowest density?

Phosphorous

What is osmoregulation control of?

Water

An 'alloy' is a mixture of what?

Metals

Which of these elements' chemical symbols comes first alphabetically?

Silver

For which type of plastic is the chemical reaction irreversible?

Thermosets

What resource is extracted by 'Fracking'?

Natural gas

Limestone is mostly made of what?

Calcium carbonate

Which of the following is the most malleable metal?

Gold

What is calcium sulphate more commonly known as?

Plaster of Paris

If a substance is described as anhydrous, what does this mean?

It does not contain water

In chemistry, the conversion of a liquid to a vapour below its boiling point is called what?

Evaporation

Persistent organic pollutants (POPs) are so dangerous because they do not do what?

Break Down

The luster of a metal is due to its?

Presence Of Free Electrons

Fe is the chemical symbol for what?

Iron

How many carats are there in chemically pure gold?

24 Click to see the answer

How many electrons does carbon have in its outer shell?

4

What is the pH value of washing soda?

11.5

The metallurgical process in which a metal is obtained in a fused state is called?

Smelting

Used in baking, which of these chemical elements is NOT found in bicarbonate of soda?

Nitrogen

Which chemical element has the symbol Pu?

Plutonium

Recycling old aluminum uses what percentage of the energy used to create it new?

5%

How many atoms each of carbon and hydrogen make up a benzene ring?

6

In an element the number of protons is equal to the number of what?

Electrons

Copper can be extracted from ores by a process known as what?

Smelting

What is the chemical symbol for lead?

Pb

Which element has the lowest freezing point of all substances?

Helium

What name is given to horizontal rows of elements in the Period Table?

Periods

Fullerene is an allotrope of which element?

Carbon

Which two elements combine to make common salt?

Sodium and chlorine

The National Chemical Laboratory is situated in?

Pune

The most important ore of aluminium is?

Bauxite

What orbits the nucleus of an atom?

Electrons

Which of the following gases is used for the artificial ripening of green fruit?

Ethylene

Which element has a melting point of 327 degrees C?

Lead

Which chemical element is present in pure alcohol but not in water ?

Carbon

Which element's chemical symbol is F?

Fluorine Click to see the answer

Which element is the only one in diamond and graphite?

Carbon

Which of these substances has the highest melting point?

Steel

Which of these B's is the chemical element?

Bromine

Chemically, which of these naturally occurring substances is NOT organic?

Salt

Which of these is a member of the Nitrogen group of elements?

Phosphorous

Which of these is NOT a gas at standard temperature and pressure?

Bromine

The study of the composition, properties and behavior of matter is called what?

Chemistry

What color flame do copper compounds burn with?

Bluish green

Why is PVC a better material for window frames than wood?

More Durable

Which of these elements has a single letter chemical symbol?

Vanadium

What is the atomic number of iodine?

53

The number of electrons presents in H+ is?

0

The hardest form of carbon is?

Diamond

What element is found in all acids?

Hydrogen

What is the atomic mass of hydrogen

1

Which type of chemical contains no oxygen?

Alkanes

How many different elements occur naturally?

92

Which metal alloy contains copper and usually tin?

Bronze

Three of these materials are solid at room temperature, which is the odd one out?

Carbon dioxide

Which of these elements appears latest in the Periodic Table?

Iron

Which of these is a gas?

Neon

Which element has the atomic number 31?

Gallium

What is the chemical symbol for Platinum?

Pt

Which of these is not a type of steel?

Tungsten Click to see the answer

Which chemical element is found in all proteins?

Nitrogen

Which of these is a chemical element?

Tungsten

Which element is found in bones, shells and teeth?

Calcium

In a reaction known as a 'reduction', what has been removed from one chemical by another?

Oxygen

What is the most common metal found on Earth?

Iron

What is the chemical symbol for Dubnium?

Db

Retinol is the chemical name for which vitamin?

Vitamin A

What's the name of the dye that is used in chemistry to test the acidity of a substance?

Litmus

What is the common name for the compound with the chemical formula K2CO3?

Potash

PVC is an example of what type of plastic?

Thermoplastics

Which gas is used to fill novelty balloons?

Helium

What is the common name for the compound Hydrogen Hydroxide?

Water

How are the elements Helium, Neon, Argon, Krypton, Xenon and Radon collectively known?

Inert gases

Which radioactive metal is represented by the chemical symbol Ac?

Actinium

Which two elements make up the gas ammonia?

Hydrogen, Nitrogen

Which element has the highest melting point known?

Carbon

Which gas did Humphry Davy experiment with in 1800 only to discover its humorous side-effects?

Nitrous oxide

The molecule which has the highest percentage of ionic character among the following is?

Hafnium

To what temperature, in degrees Celsius, would you have to heat a diamond before it melted?

3,700

What percentage of the body is made up of Oxygen?

65%

K is the chemical symbol for potassium derived from its Latin name which is...?

Kalium

Which chemical element is always required for combustion to take place?

Oxygen

Metals can be extracted using which of these processes?

Electrolysis

Man first used which metal?

Copper

Which of these is often used in electrical wiring and plumbing?

Copper

In chemistry, which of these pairs are two words for the same thing ?

Base and alkali

C is the symbol of which chemical element?

Carbon Click to see the answer

In chemistry, which metal is indicated by a flame test producing a lilac flame?

Potassium

Which chemical element is named after the formulator of the Theory of Relativity?

Einsteinium

What is it called when a solid changes directly into a gas?

Sublimation

What are chemicals containing a benzene ring often known as?

Aromatics

What name is given to any substance which cannot be broken down any further by chemical methods?

Element

Which of these gases appears earliest in the Periodic Table?

Helium

Which poisonous element is represented by the chemical symbol As?

Arsenic

Which of these scientists does not have a chemical element named after them?

John Dalton

Which elements are good conductors of heat and electricity?

Transition metals

Which of these is an alloy?

Steel

What is the chemical symbol for Mercury?

Hg

An example of a strong acid is?

Hydrochloric Acid

What was the first synthetic fiber?

Rayon

If a substance has a pH of 6, what is it?

Slightly acidic

Groups in the periodic table are columns of what?

Similar elements

In chemistry, protons, neutrons and electrons basically make up which sort of elements?

All of them

Which element has the chemical symbol Ba?

Barium

Which of these is a chemical element?

Sulphur

What does an ionic bond involve in terms of electrons?

Transferring

Which of these metals is low density and resistant to corrosion?

Aluminium

What is the chemical symbol for titanium?

Ti

What is the highest atomically numbered element in the lanthanide group?

Lutetium

Salt, diamond and coal are all examples of what?

Minerals

Which elements make up sugars such as lactose and glucose?

Carbon hydrogen oxgen

Spot the chemical element ...

Gold

Which of these metals can not be extracted in a blast furnace?

Aluminium

What type of molecule is C2H2?

Alkene

What paper is used to test acid and alkali?

Litmus

Where is an oil fractionating column hottest?

Top

Chemically a cyanide is a compound that contains which two elements triple bonded together?

Carbon and nitrogen

CuSO4 is the chemical formula for the blue/green crystals of which compound?

Copper sulphate

Which of these is NOT an organic compound?

Ammonia

Which element gets its chemical symbol from hydragyrum, its former name meaning 'watery liquid' ?

Mercury

If a substance has a pH of 13, what is it?

Very alkali

What is the pH value of apple juice?

3 Click to see the answer

What is produced in the Haber-Bosch process?

Ammonia

Which of these elements appears earliest in the Periodic Table?

Boron

Photosynthesis is a chemical process through which plants produce?

Glucose

What is the main constituent of limestone?

Calcium carbonate

The element symbol for potassium is?

K

How many chemical elements begin with the letter Z?

2 Click to see the answer

The main active constituent of tea and coffee is?

Caffeine

Which chemical element is the main source of nuclear energy?

Uranium

What is sodium chloride more commonly known as?

Salt

In comparison with steel, what is pure iron like?

Softer

Which of these is NOT one of the inert gases?

Chlorine

What is the opposite of the word 'alkali'?

Acid

Which fuel releases the most carbon dioxide when used?

Coal

Which of these describes what salt does in water?

Dissolve

Which chemical element has the symbol 'K'?

Potassium Click to see the answer

Which of these gases is the least?

Helium

Which element has a relative atomic mass of 1?

Hydrogen

Which of these gases is mainly responsible for acid rain?

Sulfur dioxide

Typically, a non-metallic element will be which of these things?

Highly electronegative

Which of these is a chemical element?

Silver

Which of these elements was discovered in 1250?

Arsenic

Which is the only substance on Earth which is naturally present in solid, liquid and gaseous form?

Water

Magma, spewed out in volcanic eruptions during the Earth's early life and solidified into hard rocks called?

Igneous Rocks

What is NaCl the chemical formula for?

Sodium Chloride

Hydrochloric acid is a solution of which gas?

Hydrogen chloride

Which gas can be used to fill balloons, and to effect a comedy voice if inhaled ...?

Helium

What is the chemical symbol for Americium?

Am Click to see the answer

Which acid has the formula HNO3?

Nitric

When was the element ununbium discovered?

1996

What element is responsible for an 'eggy' smell?

Sulfur

What is the atomic mass of oxygen?

16

What type of structure is silicon dioxide?

Giant covalent

When was the element hassium discovered?

1984

Which element has the chemical symbol Br?

Bromine

Which C is tin oxide ore?

Cassiterite

What molecules do we breathe out?

Carbon dioxide

PVC is an example of a what plastic?

Thermoplastics

Which of these is NOT true of helium?

Combustible

The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope is left behind?

01-Aug

Which of these would you be most likely to use in a chemistry lab?

Round bottom flask

When was the element dubnium discovered?

1970

What is the main use of the chemical ammonia?

Fertiliser Click to see the answer

Which element has the chemical symbol Hg?

Mercury

Which chemical element has the Atomic Number Two?

Helium

The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of?

The Periodic Table

What more common name is given to 'electropositive' chemical elements?

Metals

A suspension of which compound in water forms Milk of Magnesia?

Magnesium Hydroxide

In terms of nuclear decay, what is the half-life of Strontium-90?

9 minutes

Which of the following is an example of a carbohydrate?

Tree Bark

What is the ratio of hydrogen to sulphur to oxygen atoms in sulphuric acid?

2:01

Which of these metals has the highest melting point?

Rhenium

Of which semi-precious stone is Nephrite a variety?

Jade

What metal has the chemical symbol Pb?

Lead

Dry Ice is the sold form of which gas?

Carbon Dioxide

Which of these metals can be added to gold to make 'white gold'?

Zinc

What must an element readily gain or lose in order to be classed as 'reactive'?

Electrons

Why can polymers be difficult to dispose of?

Don't break down

Which of these elements has the lowest melting point?

Gallium

Which element is used in computer chips?

Silicone

What state is bromine in at room temperature?

Liquid Click to see the answer

Milk is which of the following?

Slightly Acidic

What happens to iron oxide in a blast furnace?

Reduced

What name is given to vertical columns of elements in the Period Table?

Groups

Alpha particles are the nuclei of which chemical element's atoms?

Helium

What is common table salt made of?

Sodium chloride

Which of these elements has a single letter chemical symbol?

Sulphur

Which of these is defined as a chemical substance that consists of just one type of atom?

Element

What basically is an 'alloy' a combination of?

Two or more metals

In chemistry, substances known as salts always contain what?

A metal

Which of these elements has a full outer shell of electrons?

Argon

What color is the powder lead carbonate?

White

What is mayonnaise an example of?

An emulsion

Two or more elements or compounds not chemically combined are known as a what?

Mixture

What name is given to a solid when it is being dissolved in a liquid?

Solute

Which metal is extracted from the mineral cinnabar?

Mercury

What is the chemical symbol for Iodine?

I

What is NaCl the chemical formula of?

Sodium Chloride

The chemical substance sometimes referred to as the 'universal solvent' is?

Water

Which chemical element is named after the inventor of dynamite?

Nobelium

Copper is often useful because it does not react with what?

Water

Which gaseous element was first called 'dephlogistaicated air'?

Oxygen Click to see the answer

Which of these is NOT the chemical symbol of one of the elements in the Periodic Table?

G

When magma cools slowly what sort of crystals form?

Large

What gas makes people who breathe it talk with squeaky voices?

Helium

Plasticizers are added to PVC to make it more what?

Soft And Flexible

Which is the only d-block lanthanide?

Lutetium

Which chemical element has the symbol Mn?

Manganese

In chemistry, what is another term for a common or non-systematic name given to a substance or group of substances?

Trivial name

Which of these substances is insoluble in water?

Sand

What is the pH value of the digestive juices?

0.9

Which of these chemical elements is NOT a liquid at standard temperature and pressure?

Mendelevium

Which element doesn't concern people studying inorganic chemistry?

Carbon

Which chemical is also known as grape sugar or blood sugar?

Glucose

The method that cannot be used for removing permanent hardness of water is?

Boiling

What chemical element has the symbol Sn?

Tin

Deuterium is an isotope of which gas?

Hydrogen

The gas used in the manufacture of vanaspati from vegetable oil is?

Hydrogen

What is the pH value of rainwater?

5.6

Which of these is a chemical element?

Antimony

Which gas with the chemical formula C2H2 is widely used in welding?

Acetylene

Which of these is not an alloy of iron?

Sheep Iron

What color is the mineral cobalt?

Silver-grey

Which element is named after the Greek word for 'green'?

Chlorine

The most electropositive element among the following is?

Caesium

Fe is the symbol of which chemical element?

Iron

Which subatomic particles determine the reactivity of a chemical element?

Electrons

What is the chemical symbol for sodium?

Na

In chemistry, regarding solutions, what is the opposite of 'dilute'?

Concentrate

Misch metal' a substance that ignites when scratched are widely used in what?

Cigarette lighters

A material which can be deformed permanently by heat and pressure is called a?

Thermoplastic

What ancient piece of linen did scientists examine for 120 hours in 1978?

Shroud of Turin

W is the chemical symbol for which metal?

Tungsten

What is the atomic number for magnesium?

12

What collective name is given to the six gases Helium, Argon, Krypton, Xenon, Neon and Radon?

Noble or inert

The products of complete combustion of a hydrocarbon are carbon dioxide and what?

Water

Which familiar gas occurs naturally in oil wells, and as marsh gas?

Methane

Which is the compound in lodestone that makes it magnetic?

Iron oxide

Which of these is a renewable energy source that can be used to make electricity?

Water

Which two elements combine to make ammonia?

Nitrogen and hydrogen

A Hydronium ion is?

H3O+

What is the opposite of alkali?

Acid