8E Quick Quiz


Sciwebhop Login
You can now login using email address
   Username
   Password
   Register    Forgot password?    

 

8Ea

1 Which of these things is an element?

A salt B water

C oxygen D air

 

2 The number of chemical elements in the world is:

A 4.

B about 100.

C about 1000.

D over a million.

 

3 The element that makes up most of the mass of your body is:

A oxygen.

B carbon.

C calcium.

D hydrogen.

 

4 Chemical elements:

A are always solids.

B are either solids or liquids.

C are always gases.

D can be solids, liquids or gases.

 

8Eb

1 Which of these metals is not a pure element?

A gold

B copper

C silver

D bronze

 

2 The smallest part of an element is called:

A an atom. B a molecule.

C a compound. D an ion.

 

3 An element is something that:

A can be split up by a chemical reaction.

B cannot be split up by a chemical reaction.

C is made up of different kinds of atom.

D is a mixture of atoms and molecules.

 

4 The correct way to write the chemical symbol for calcium is

A CA B C

C ca D Ca

 


8Ec

1 Which list only contains metals?

A copper, gold, silver

B copper, gold, sulphur

C silver, oxygen, iodine

D oxygen, iodine, sulphur

 

2 Which list contains three typical properties of metals?

A good conductor of heat, brittle, low melting point

B poor conductor of heat, strong, high melting point

C good conductor of electricity, strong, high melting point

D poor conductor of electricity, weak, low melting point

 

3 Which list contains three typical properties of non-metals?

A good conductor of heat, brittle, low melting point

B poor conductor of heat, strong, high melting point

C good conductor of electricity, strong, high melting point

D poor conductor of electricity, weak, low melting point

 

4 Where are metallic elements found in the Periodic Table?

A on the right-hand side

B on the left-hand side

C in the top rows only

D in the bottom rows only

 

8Ed

1 A compound contains:

A only one type of atom.

B only one element.

C only two elements joined together.

D at least two elements joined together.

 

2 The smallest particle of water with the formula H2O is called:

A an ion.

B a molecule.

C an element.

D an atom.

 

3 The formula for sulphur dioxide is SO2. Sulphur dioxide contains:

A one atom of sulphur and one atom of oxygen.

B two atoms of sulphur and two atoms of oxygen.

C one atom of sulphur and two atoms of oxygen.

D two atoms of sulphur and one atom of oxygen.

 

4 The formula of ammonia is NH3. Which statement is true?

A An atom of ammonia contains 4 molecules.

B An atom of ammonia contains two different elements.

C A molecule of ammonia contains 4 atoms.

D A molecule of ammonia contains 4 different elements.

 


8Ee

1 The name of the compound that you get when magnesium burns in oxygen is:

A magnesium oxide.

B sodium chloride.

C magnesium chloride.

D sulphuric acid.

 

2 Water is an example of:

A an element.

B an atom.

C a compound.

D an alloy.

 

3 Which of these word equations is correct?

A copper + oxygen copper sulphate

B iron + chlorine iron oxide

C aluminium + iodine aluminium iodide

D sodium + sulphur sodium hydroxide

 

4 How many elements are there in the compound iron sulphide?

A one

B two

C three

D more than three