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8.1b.Physical and chemical changes.15MCQ

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Which one of these is typical of a physical change and not a chemical change?

a)

Emits light

b)

Easy to reverse

c)

Smell given off

d)

Colour change

e)

Gas released

2.

Which change of state occurs when liquid water reaches 100oC?

a)

Boiling

b)

Evaporation

c)

Condensation

d)

Freezing

e)

Sublimation

3.

Which change of state occurs when steam reaches 100oC?

a)

Boiling

b)

Evaporation

c)

Condensation

d)

Freezing

e)

Sublimation

4.

What happens to the bonds between particles when a liquid boils?

a)

They are broken

b)

They get stronger

c)

They double

d)

They release energy

e)

They release gas

5.

Stones sink in water because they are...

a)

More dense

b)

Heavier

c)

Solid

d)

Colder

e)

Smaller

6.

What always happens during a chemical reaction?

a)

Gas given off

b)

Heat given off

c)

Light given off

d)

Changes colour

e)

Atoms rearrange

7.

Exothermic reaction where glucose + oxygen  \rightarrow   carbon dioxide + water

a)

Respiration

b)

Neutralisation

c)

Thermal decomposition

d)

Displacement

e)

Photosynthesis

8.

Particle diagram for a liquid?

a)
b)
c)
d)
e)
9.

Which two states of matter can be found when a substance is boiling?

a)

Solid

b)

Liquid

c)

Gas

d)

Vacuum

e)

Plasma

10.

Which two states of matter can be found when a substance is freezing?

a)

Solid

b)

Liquid

c)

Gas

d)

Vacuum

e)

Plasma

11.

Which heating curve has labelled the point where a substance can be found as both solid and liquid?

a)
b)
c)
d)
e)
12.

Change of state straight from solid \rightarrow gas? 

a)

Boiling

b)

Evaporation

c)

Condensation

d)

Freezing

e)

Sublimation

13.

Which temperature is closest to normal room temperature?

a)

0 oC

b)

10 oC

c)

20 oC

d)

37 oC

e)

100 oC

14.

Alcohol has a freezing point of -100 oC and a boiling point of 78 oC. What state of matter will it be at 25 oC?

a)

Solid

b)

Liquid

c)

Gas

d)

Vacuum

e)

Plasma

15.

Mercury has a freezing point of -39 oC and a boiling point of 356 oC. What state of matter will it be at 25 oC?

a)

Solid

b)

Liquid

c)

Gas

d)

Vacuum

e)

Plasma