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- 1. Multiple Choice
Which of the following is not a sign of chemical change?
Change is shape
Change in colour
Change in temperature
Production of light or sound
- 2. Multiple Choice
Logs of pine wood are burning in a fireplace. What is a sign that a chemical change is happening to the wood?
The wood turns black
The wood is brown
- 3. Multiple Choice
Logs of pine wood are burning in a fireplace. What is a sign that a chemical change is happening to the wood?
Heat and light are released
The wood smells like pine
- 4. Multiple Choice
A chemical change occurs when:
a new substance is created
a substance looks different from before
a substance's physical properties change
two substances are mixed together
- 5. Multiple Choice
Which of the following is a chemical change?
Water combines with sodium to form sodium hydroxide and hydrogen gas
Salt is mixed with pepper in a bowl
- 6. Multiple Choice
Which of the following is a chemical change?
Water breaks down to form hydrogen gas and oxygen gas
Water freezes to make ice
- 7. Multiple Choice
True/False: Chemical changes are usually easy to reverse.
True
False
- 8. Multiple Choice
Which of the following characteristics is shared by all chemical reactions?
Produce a precipitate
Show a color change
Release heat energy
Form new substances
- 9. Multiple Choice
Chemical or Physical change?
most of the properties before and after are the same.
Chemical
Physical
- 10. Multiple Choice
Chemical or Physical change?
Most of the properties before and after are the different.
Chemical
Physical
- 11. Multiple Choice
Chemical or Physical change?
Breaking an egg
Chemical
Physical
- 12. Multiple Choice
Chemical or Physical change?
Shattering a vase.
Chemical
Physical
- 13. Multiple Choice
True/False: When a substance undergoes a physical change a new substance is produced.
True
False
- 14. Multiple Choice
True/False: When a substance undergoes a physical change the particles moves to new positions, speed up or slow down.
True
False
- 15. Multiple Choice
True/False: When a substance undergoes a physical change the particles can change speed but not position.
True
False
- 16. Multiple Choice
Which term matches the following definition?
Definition: a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition (make up), resulting in the formation of at least one new substance.
Chemical change
Physical Change
Chemical property
Physical property
- 17. Multiple Choice
Which term matches the following definition?
Definition: a usually reversible change in the physical properties of a substance, as size or shape. This change does not result in a change chemical properties or composition (make up), as it is the same substance before and after the change.
Chemical change
Physical Change
Chemical property
Physical property
- 18. Multiple Choice
Which term matches the following definition?
Definition: a characteristics of chemicals that are not associated with a change in it's chemical composition. Example include size, shape, colour, density, mass, volume, length and lustre. An example of this for iron is it is silver, shiny and dense.
Chemical change
Physical Change
Chemical property
Physical property
- 19. Multiple Choice
Which term matches the following definition?
Definition: a characteristics of chemicals that are associated with a change in it's chemical composition (make up). Example include flammability and reactivity. An example of this for Iron is it combines with oxygen in the presence of water to form rust (iron oxide).
Chemical change
Physical Change
Chemical property
Physical property
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