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CLASS XI STATES OF MATTER

Total questions: 20

Worksheet time: 40mins

Name
Class
Date
1.

Matter in a ...... has a ...... volume and ...... shape

a)

gaseous state ___ no definite ___ no definite

b)

liquid state _____ no definite ___ definite

c)

a. solid state _____ no definite ___ no definite

2.

New substances are always formed when matter undergoes a ___.

a)

change in shape

b)

change in temperture

c)

physical change

d)

chemical change

3.

The _____________________ states that mass is neither created nor destroyed in a chemical reaction, it is conserved

a)

Law of Conservation of Water

b)

Law of Conservation of Matter

c)

Law of Conservation of Atoms

d)

Law of Conservation of Minerals

4.
The combination of pressure and temperature where all three states of matter will exist at the same time
a)
triple point
b)
temperature point
c)
pressure point
d)
the point of three states
5.
Evaporation is when liquid particles absorb enough energy to leave the 
a)
surface
b)
bottom
c)
center
d)
liquid throughout
6.
To boil, what must equal the atmospheric pressure?
a)
atmosphere
b)
kinetic energy
c)
vapor pressure
d)
temperature
7.
In a closed container, the molecules evaporating will eventually equal
a)
the molecules condensing
b)
the molecules in the liquid
c)
the molecules of air
d)
the molecules in equilibrium
8.
If a solid does not have a uniform crystalline structure, it is considered
a)
an allotrope
b)
a liquid
c)
amorphous
d)
a metal
9.
The only state that will change volume with pressure changes is
a)
a solid
b)
a liquid
c)
a gas
d)
no states of matter
10.

Which process could cause a material to change state from gas to liquid?

a)

Adding heat

b)

Adding energy

c)

Removing particles

d)

Removing energy

11.

What will occur when the substance transitions from B to A? (Diagram A)

a)

condensation

b)

evaporation

c)

melting

d)

freezing

12.

What is the normal boiling point of this substance? (Diagram C)

a)

150 °C

b)

100 °C

c)

-50 °C

d)

0 °C

13.

**An ice cube feels cold when we hold it. Which of the following best explains why?

a)

Heat moves from our hands into the ice cube.

b)

Cold moves from our hands into the ice cube.

c)

Heat moves from the ice cube into our hands.

d)

Cold moves from the ice cube into our hands.

14.
Which statement is true for carbon dioxide at -60 °C?
a)
All three phases are possible.
b)
It can exist as a solid or a gas, depending on pressure.
c)
It is a solid.
d)
With enough pressure it can be melted.
15.
What is point B?
a)
triple point
b)
critical point
c)
equilibrium point
d)
normal melting point
16.
During a phase change what happens to temperature?
a)
it increases
b)
it decreases
c)
depends; if being heated it increases, if being cooled it decreases
d)
stays constant
17.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
18.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
19.

Which of the following statement is false about water?

a)

Water has a high specific heat.

b)

It takes much more energy to vaporize water than it is to raise it from room temperature to its boiling point.

c)

Solid water is denser than liquid water.

d)

Water reverses the trend for density at 4 degrees Celsius.

20.
When the temperature of matter decreases the particles ...
a)
speed up and move farther apart
b)
speed up and move closer together
c)
slow down and move farther apart
d)
slow down and move closer together