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