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WorksheetsUnit 2 Interactions of Matter
Total questions: 30
Worksheet time: 20mins
Name
Class
Date
1.
Which of these changes would cause the molecules in a substances to spread farther apart?
a)
Putting the substance in a smaller container
b)
Adding thermal (heat) energy
c)
Changing the phase from liquid to solid
d)
Decreasing the overall kinetic energy of a liquid
2.
A student drew the atoms in a solid. Her picture shows the closely packed atoms vibrating in place. How would she have to change this picture to show the same substance as a liquid?
a)
She should show the atoms moving more and make a little more space between them.
b)
She should draw the atoms bigger.
c)
She should draw the atoms REALLY far apart.
d)
She should draw the atoms in a different shape.
3.
What happens when you add thermal energy to a substance?
a)
Spacing between particles decreases
b)
Vibration of particles increases
c)
Temperature decreases
d)
Pressure increases
4.
Which of these describes how temperature and kinetic energy are related?
a)
When kinetic energy decreases, temperature doesn't change.
b)
When kinetic energy increases, temperature decreases.
c)
When kinetic energy decreases, temperature increases.
d)
When kinetic energy increases, temperature increases.
5.
When a solid changes to a liquid, what happens?
a)
It melts.
b)
The particles move faster and spread apart.
c)
The kinetic energy of particles increases.
d)
All of these!
6.
In a solid, how are the molecules packed?
a)
They are very close together.
b)
They are spread far apart.
c)
Molecules? What molecules?
d)
They are kinda close together.
7.
In a solid, how do the molecules move?
a)
They don't.
b)
They vibrate and slide past each other.
c)
They vibrate, but don't move from place to place.
d)
They vibrate and move freely.
8.
In a liquid, how do the molecules move?
a)
They don't.
b)
They vibrate and slide past each other.
c)
They vibrate, but don't move from place to place.
d)
They vibrate and move freely.
9.
In a gas, how do the molecules move?
a)
They don't.
b)
They vibrate and slide past each other.
c)
They vibrate, but don't move from place to place.
d)
They vibrate and move freely.
10.
What is happening between R and S on this graph (the straight, horizontal line)?
a)
The substance is changing phase.
b)
The substance is freezing.
c)
The substance is heating up.
d)
Nothing
11.
What is happening between Q and R on this graph (the diagonal line)?
a)
The substance is changing phase.
b)
The substance is freezing.
c)
The substance is heating up.
d)
Nothing
12.
Which of the following is NOT true about different states of matter?
a)
The particles move at different speeds.
b)
The particles have more or less space between them.
c)
Each state is a different substance.
13.
These particles are spread far apart. They are also compressible and move around freely at high speeds.
a)
solid
b)
liquid
c)
gas
d)
plasma
14.
Which of these has a fixed shape?
a)
solid
b)
liquid
c)
gas
d)
plasma
15.
Which of these has a fixed volume?
a)
solid
b)
liquid
c)
gas
d)
plasma
16.
Which of these takes on the shape of its container? Choose the best answer.
a)
solid
b)
liquid
c)
gas
d)
liquid AND gas
17.
What happens when a gas becomes a liquid?
a)
The particles slow down.
b)
The particles get closer together.
c)
Kinetic energy decreases.
d)
All of these!
18.
What state of matter has the greatest attractions between molecules?
a)
solid
b)
liquid
c)
gas
d)
plasma
19.
Which of these is a chemical property of matter?
a)
color
b)
melting point
c)
density
d)
flammability
20.
Which of these is a chemical property of matter?
a)
Magnetism
b)
Melting Point
c)
Reactivity
d)
Texture
21.
A car rusting: physical or chemical change?
a)
physical
b)
chemical
22.
Fireworks exploding: physical or chemical change?
a)
physical
b)
chemical
23.
Ice melting: physical or chemical change?
a)
physical
b)
chemical
24.
Slicing fruit: physical or chemical change?
a)
physical
b)
chemical
25.
Water evaporating: physical or chemical change?
a)
physical
b)
chemical
26.
Silver tarnishing (turning black): physical or chemical change?
a)
physical
b)
chemical
27.
Roasting marshmallows: physical or chemical change?
a)
physical
b)
chemical
28.
Carving pumpkins: physical or chemical change?
a)
physical
b)
chemical
29.
What happens when a gas changes to a liquid?
a)
The particles slow down.
b)
The particles get closer together.
c)
The attractions between molecules increase.
d)
All of these are true.
30.
What does temperature measure?
a)
The average potential energy of the molecules of a substance
b)
The average kinetic energy of the molecules of a substance
c)
How close together the molecules of a substance are
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