2. 1. Why is color a physical
property?
•
Color can be observed without changing the
object.
3. • 2. What is a physical property that does
not change with the amount of matter?
• Melting point, boiling point and density do not
change with the amount of matter.
4. • 3. What happens during a physical
change?
• The appearance of matter change, but the
composition does not change.
5. • 4. What type of change is a change of
state?
• A physical change
6. • 5. What happens during a chemical
change?
• During a chemical change, substances are
change into different substances.
7. • 6. What are three clues that a chemical
change has occurred?
• Change in color, loss or gain of energy, change of
smell and production of a gas or a solid
8. • 7. What is an examples of a chemical
change?
• Possible answers could include anything
burning, rusting or tarnishing. Other answers
are also possible given teacher approval.
9. • 8. What is the law of conservation of
mass?
• The law of conservation of mass states that the
total mass of matter is the same before and after
a physical or chemical change.
10. • 9. What changes when the mass of an
object increases while the volume stays
the same?
• A. Color
• B. Length
• C. Density
• D. Height
Answer = C, density
11. • 10. What word best describes the type of
materials that attract iron?
• A. Magnetic
• B. Chemical
• C. Mass
• D. Physical
• Answer = A, magnetic
12. • 11. Which is an example of a chemical
property?
• A. Color
• B. Mass
• C. Density
• D. Ability to burn
• Answer = D, ability to burn
13. • 12. Which is an example of a physical
change?
• A. Metal rusting
• B. Silver tarnishing
• C. Water boiling
• D. Paper burning
• Answer = C, water boiling
14. • 13. What characteristic best describes
what happens during a physical change?
• A. Composition changes
• B. Composition stays the same
• C. Form stays the same
• D. Mass is lost
• Answer = B, composition stays the same
15. • 14. Which is an example of a chemical
change?
• A. Water freezes
• B. Wood is carved
• C. Bread is baked
• D. Wire is bent
• Answer = C, bread is baked
16. • 15. Which is NOT a clue that could
indicate a chemical change?
• A. Change in color
• B. Change in shape
• C. Change in energy
• D. Change in odor
• Answer = B, change in shape
17. • 16. What property stay the same during
physical and chemical changes?
• A. Density
• B. Shape
• C. Mass
• D. Arrangement of particles
• Answer = C, mass
18. • 17. What kind of change is taking place
when you cut a piece of cake from the
whole?
• Answer: physical change
19. • 18. What kind of change is taking place
when a candle is being burnt?
• Answer = a chemical change
20. • What could you do to an object to cause a
chemical change?
• A. Cut it
• B. Paint it
• C. Throw it
• D. Burn it
• Answer = d, burn it
21. • Which of the following physical
properties is size dependent?
• A. Density
• B. Mass
• C. Volume
• D. Weight
• Answer = A, density
22. • Which of the following choices describes
a physical change?
• A. Pouring an acid onto calcium
carbonate
• B. Dropping an antacid tablet into water
• C. Heating water to its boiling point
• D. Pouring vinegar onto baking soda
• Answer = c, heating water to its boiling point
23. • Which of the following occurs as you heat
a liquid to its boiling point?
• A. Condensation
• B. Melting
• C. Vaporization
• D. Freezing
• Answer = c, vaporization
24. • Which of the following is a chemical
reaction?
• A. Making ice cubes
• B. Toasting bread
• C. Slicing a carrot
• D. Boiling water
• Answer = b, toasting bread
25. • When you making and eat scrambled
eggs, many changes occur to the eggs.
Which of the following best describes a
chemical change?
• A. Crack the eggs
• B. Scramble the eggs
• C. Cook the eggs
• D. Chew the eggs
• Answer = C, Cook the eggs
26. • What is the formula that should be used
to find density?
• Answer = D = m ÷ v
• (Density = mass divided by volume)
27. • Tell me at least 3 physical properties.
• Answer = Physical properties include: state, color, shape,
smell, taste and texture, mass, volume, density, melting
point and boiling point.
28. • What happens if vaporization or
condensation occurs?
• Answer = substance changes from a liquid to a
gas
29. • What is sublimation?
• Answer = when a solid changes directly to a gas
30. • What is deposition?
• Answer = when a gas changes to a solid without
ever becoming a liquid
31. • Fill in the blanks:
• If I observe the color of a leaf, I am
looking at its _____________. When
leaves change color in the fall, it is a
________________.
• Answer = physical property; chemical change
32. • What does the law of conservation of
mass say?
• Answer = the law of conservation of mass says
that mass cannot be created or destroyed during
physical and chemical changes that take place.