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Year 9 Physics Term 1

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.
What is happening when my ice cream changes from a solid to a liquid?
a)
freezing
b)
melting
c)
burning
d)
evaporation
2.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position.
b)
have no viscosity.
c)
decrease in volume with increasing temperature.
d)
are free to move around one another but still touch.
3.

Which has a greater distance between particles?

a)

Solid

b)

Liquid

c)

Gas

4.
Matter changes state when...
a)
energy is added or removed
b)
energy is added
c)
energy is removed
d)
there is no energy
5.
As molecules gain energy, they move _____ and spread apart, and vise versa.
a)
faster
b)
slower
c)
less
d)
inside
6.
What state is a substance in if the temperature of a substance is between its melting point and its boiling point?
a)
solid
b)
liquid
c)
gas
d)
plasma
7.
In general what is the most dense form of matter?
a)
solid
b)
liquid
c)
gas
d)
plasmas
8.

Something that goes from liquid to gas is...

a)

Evaporation

b)

Melting

c)

Freezing

d)

Sublimation

9.
Which states allow easy flow of particles
a)
Gas and Solid
b)
Gas and Liquid
c)
Solid and Liquid
d)
Gas only
10.

Which description best matches this particle model?

a)

Closely packed and can't move a lot.

b)

Particles are close together but can move a little.

c)

Particles have lots of energy and can move randomly

d)

Particles have little energy and can move randomly

11.

How do the particles in a solid move?

a)

They remain still

b)

They vibrate from side to side

c)

They move around

d)

They move quickly and randomly

12.

What is the equation for density

a)

Density = mass x volume

b)

Density = Volume/Mass

c)

Density = Mass/Volume

13.

Why are liquids more dense than gases?

a)

The particles in a gas are closer together

b)

The particles in a liquid are closer together

c)

The particles in a gas can flow

d)

The particles in a gas move randomly

14.

What is the internal energy of a substance

a)

The sum of the kinetic and potential energies of the particles

b)

The kinetic energy of the particles

c)

The potential energy of the particles

d)

The speed of the particles

15.

The diagram shows a heating curve. What is happening between B and C?

a)

Melting

b)

Evaporating

c)

Condensing

d)

Freezing

16.

The diagram shows a heating curve. What is happening between D and E?

a)

Melting

b)

Evaporating

c)

Condensing

d)

Freezing

17.

The diagram shows a heating curve. What state is the substance between E and F?

a)

Solid

b)

Liquid

c)

Gas

d)

Solid and liquid

18.

The diagram shows a heating curve. Between which points is the internal energy of the substance greatest?

a)

A and B

b)

B and C

c)

D and E

d)

E and F

19.

What does this measuring device measure?

a)

Liquid

b)

Volume

c)

Mass

d)

Density

20.

What does this measuring device measure?

a)

Liquid

b)

Volume

c)

Mass

d)

Density

21.

What does this measuring device measure?

a)

Heat

b)

Temperature

c)

Mass

d)

Density

22.

State the units for mass

a)

g

b)

cm3

c)

g/cm3

23.

State the units for volume

a)

g

b)

cm3

c)

g/cm3

24.

State the units for density

a)

g

b)

cm3

c)

g/cm3

25.

What happens to the internal energy of a substance when it's temperature rises?

a)

Nothing

b)

It goes up

c)

It goes down

26.

What does this measuring device measure?

a)

Heat

b)

Volume

c)

Distance

d)

Density

27.

What causes gas pressure?

a)

Collisions between particles and the walls of the container

b)

Too many questions about particles

c)

Collisions between particles

28.

Why does the temperature of a solid remain constant as it is melting?

a)

Heat energy is being converted to kinetic energy

b)

The energy is being absorbed by the particles

c)

Energy is required to overcome all the bonds between the particles

d)

Energy is required to overcome some of the bonds between the particles

29.

State the units of specific heat capacity

a)

J/kg/oC

b)

J/kg

c)

J/oC

d)

J

30.

What decreases when liquid changes into a gas?

a)

The space between the particles

b)

The speed of the particles

c)

The energy of the particles

d)

The number of particles per cm3

31.

Which tend to be the most dense?

a)

Solids

b)

Liquids

c)

Gases

32.

What is the correct order for least to most internal energy?

a)

Solid, liquid, gas

b)

Liquid, solid, gas

c)

Gas, liquid, solid

d)

Gas, solid, liquid

33.

What is the correct order for lowest to highest density?

a)

Solid, liquid, gas

b)

Liquid, solid, gas

c)

Gas, liquid, solid

d)

Gas, solid, liquid

34.

Which of these processes happen at a constant temperature?

a)

Boiling

b)

Melting

c)

Freezing

d)

All of them, they are all changes of state

35.

What is the change of state from gas to liquid?

a)

Evaporation

b)

Freezing

c)

Melting

d)

Condensation

36.

What is the change of state from solid to liquid?

a)

Evaporation

b)

Freezing

c)

Melting

d)

Condensation

37.

What is the change of state from liquid to solid?

a)

Evaporation

b)

Freezing

c)

Melting

d)

Condensation

38.

What is the change of state from liquid to gas?

a)

Evaporation

b)

Freezing

c)

Melting

d)

Condensation

39.

Particles are closest together in ..............

a)

Solids

b)

Liquids

c)

Gases

d)

Winter

40.

Particles are furthest apart in ..............

a)

Solids

b)

Liquids

c)

Gases

d)

Winter

41.

Particles travel fastest in ..............

a)

Solids

b)

Liquids

c)

Gases

d)

Winter

42.

Particles travel slowest in ..............

a)

Solids

b)

Liquids

c)

Gases

d)

Winter

43.

All particles in a gas move with the same speed

a)

True

b)

False, they have a range of speeds

44.

What do we need to measure to calculate density?

a)

Weight and mass

b)

Weight and volume

c)

Mass and volume

d)

Mas and area

45.

Which of these steps is needed to calculate the density of any object?

a)

Find the mass using a mass balance

b)

Find the volume by multiplying length by width by height

c)

Lower the object slowly into a measuring cylinder

d)

Measure the length of each side

46.

Which of these steps is needed to calculate the density of an irregular shaped object?

a)

Find the mass using a mass balance

b)

Find the volume by multiplying length by width by height

c)

Lower the object slowly into a measuring cylinder

d)

Measure the length of each side

47.

Which of these steps is needed to calculate the density of a liquid?

a)

Find the mass using a mass balance

b)

Find the volume using a measuring cylinder

c)

Lower the object slowly into a measuring cylinder

d)

Subtract the original volume from the new volume

48.

The kinetic energy store of a substance increases when .........

a)

Its temperature decreases

b)

Its temperature increases

c)

It melts

d)

It boils

49.

The potential energy store of a substance increases when .........

a)

Its temperature decreases

b)

Its temperature increases

c)

It melts

d)

It boils

50.

The energy required to raise the temperature of 1kg of a substance by 1oC

a)

Specific latent heat of fusion

b)

Specific latent heat of vaporisation

c)

Specific heat capacity

d)

Boiling point

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