Q1) Multiple Choice: Identify the choice that best completes the statement or answers the
question.
1. Matter that has a definite volume and a definite shape is a ____.
a. Gas
c. plasma
b. Liquid
d. solid
2. Matter in which atoms are tightly held in place is a ____.
a. Gas
c. plasma
b. Liquid
d. solid
3. A gas-like mixture with no definite volume or shape that is made up of positively and
negatively charged particles is a ____.
a. Gas
c. plasma
b. Liquid
d. solid
4. Matter that has a definite volume but no definite shape is a ____.
a. Gas
c. plasma
b. Liquid
d. solid
5. Matter in which the particles are free to move in all directions until they have spread
evenly throughout their container is a ____.
a. Gas
c. plasma
b. liquid
d. solid
6. Most matter ____ when heated.
a. condenses
c. expands
b. contracts
d. solidifies
7. The amount of energy needed to change a material from a solid to a liquid is called the
heat of ____.
a. Condensation
c. fusion
b. Evaporation
d. vaporization
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8. The amount of energy needed to change a material from a liquid to a gas is called the
heat of ____.
9.
a. Condensation
c. fusion
b. Evaporation
d. vaporization
Matter in which particles are arranged in repeating geometric patterns is a ______.
a. Solid
b. liquid
c. gas
d. plasma
10. Matter with no definite volume and no definite shape is a ______.
a. solid
b. liquid
c. gas
d. plasma
13. Matter in which the particles are free to move in all directions until they have spread
evenly throughout their container is a ______.
a. solid
b. liquid
c. buoyant
d. gas
14. As a sample of matter is heated, its particles ______.
a. stop moving
c. move more quickly
b. move more slowly
d. are unaffected
15. The most common state of matter in the universe is ______.
a. solid
b. liquid
c. gas
d. plasma
16. The particles that make up a solid move ______ than do the particles that make
up a gas.
a. more slowly
c. in the same way
b. more quickly
d. more quickly and farther
17. The attraction between particles gives solids a definite ______.
a. shape and volume
c. shape and position
b. shape and color
d. flow and radius
18. ______ is the term used to explain how hot or cold an object is.
a. Mass
b. Weight
c. Temperature
d. Volume
19. Ice is an example of matter in the ______ state.
a. solid
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b. liquid
c. gaseous
d. plasma
20. The temperature at which a solid begins to liquefy is its ______ point.
a. freezing
b. boiling
c. melting
d. mass
21. The kinetic energy of particles in a liquid is ______ the kinetic energy of particles in
a solid.
a. more than
b. less than
c. the same as
d. none of these
Q2) Use the terms definite, not definite, close together, and spread apart to complete the
table below.
State
Gas
Shape
Indefinite
Volume
Indefinite
Particles movement
Far apart and free to
move
Liquid
Indefinite
Definite
Tightly packed but far
apart enough so they slide
over another
Solid
Definite
Definite
Tightly packed and
vibrating very slowly
Plasma
Indefinite
Indefinite
Far apart and free to
move
Q3) Use the labels heat of vaporization, heat of fusion, stronger, and broken to complete
the concept map about energy and changes the state.
a- heat fusion
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b- stronger
c- heat of vaporization
d- broken
Q4) Where you might find plasma?
SUN, Lightning, Aurora, Neon tube
Q5) Explain why do gases fill the container they are in, rather than staying in just
one part of it?
…Gases have enough Kinetic energy and they are far apart and can move freely. So gases do not
have fixed volume or shape,
Q6) why should you never leave spray cans near a heat source?
…because spray is a gas under pressure, and with heat it will gain kinetic energy and temperature
will increase then will explode
Q7) What are the three assumptions of the kinetic theory?
1- All matters are composed of small particles……………
2- Particles are random and constant motion
3- these particles are colliding with each other and with wall in Elastic collision
Q8) Define thermal energy?
total energy of a material’s particles, -including kinetic and potential—resulting
from forces that act within or between particles.
Q9) How are kinetic energy and temperature related?
1-Temperature is the average kinetic energy of particles in matter.
2- When kinetic energy increases the temperature increase
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Q10) Using the below graph, describe the energy changes that are occurring when
water goes from -20°C to 100°C.
Temperature increases as Heat added, At 0 Co, the ice is melting and the temperature keeps
constant till all the ice melts
Then the temperature increases again till it reaches 100 0 Co the boiling point of water, then the
temperature will keep constant
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Q11) Compare between melting point and boiling point?
Melting point
Temperature at which a solid begins to
liquefy
Boiling point
Temperature at which the pressure of the
vapor in the liquid is equal to the external
pressure
Q12) Distinguish between heat fusion and heat of vaporization?
Heat Fusion
Heat Vaporization
The amount of energy required to
Amount of energy required for the
change a substance from the solid
liquid at its boiling point to become a
phase to the liquid phase at its melting gas.
point
Q13) Compare between evaporation and boiling.
Evaporation
Boiling
1- Happens at the surface
1- Happens throughout the liquid
2- Happens at any temperature above
2- Happens at specific Temperature
melting point
Q14) Explain why diffusion in gases is faster than in liquids/ solids
Because they move fast and they are far apart
Q15) Explain why amorphous solids melts over a temperature range
……because there is no specific geometric arrangement ( no ordered structure)
Q16) List some examples of amorphous solids.
……Plastic, wax, Glass and volcanic glass ( obsidian)
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