Chemical Reactions Quiz

In a chemical reaction...

• One or more new substances are formed

• Explosions always happen

• They always happen really fast

True or False: When a substance changes state it is always a from a chemical reaction...

• True

• False

What does the 'I' stand for in the Acronym 'SIGNS'?

• Incident has occurred

• In good time a react happens

• Increase/decrease in number of atoms

• Increase/decrease in temperature

What substance is this?

It is rigid in shape, has a fixed shape and fixed volume.

• Gas

• Liquid

• Solid

What substance is this?

It is not rigid, has not fixed shape and no fixed volume.

• Solid

• Liquid

• Gas

What substance is this?

It is not rigid, has no fixed shape and has a fixed volume.

• Solid

• Liquid

• Gas

Finish this sentence: As substances are heated the atoms...

• Move slower

• Increase in size

• Decrease in size

• Move faster

Which are the products in this chemical equation?

• 6CO2 + 6H20

• C6H12O6 + 6O2

Which are the reactants in this chemical equation?

• 6CO2 + 6H2O

• C6H12O6 + 6O2

In photosynthesis what is the sugar product called?