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- 1. Multiple Choice
Matter changes with the season, including changes in the___________ of leaves and in the___________ of the air.
Physical change, chemical change
Solubility, density
Temperature, color
Energy, rate
- 2. Multiple Choice
Matter can change in many ways, including____________ changes and____________ changes.
Gas, solid
Physical, chemical
Temperature, energy
Color, physical
- 3. Multiple Choice
In a physical change, the___________ of the substance does not change.
Identity
Dissolving
Color
The form
- 4. Multiple Choice
________ one substance in another does not change the identities of the substance.
The mass of
Mixing
Foraging
Dissolving
- 5. Multiple Choice
The formation of ice on the surface of a lake is an example of a(n)___________.
Energy
Change instate
Rate
Color
- 6. Multiple Choice
Changes in state involve changes in the amount of________ that the particles in a substance have
Heat
Energy
- 7. Multiple Choice
The __________ at which one state of matter changes into another depends on how much energy is added or taken away from the substance.
Rate
Mass
Identity
- 8. Multiple Choice
In a chemical change, the substances that make up matter change into another substance with___________ physical properties and chemical properties.
Release of
Rate of
Equal
Different
- 9. Multiple Choice
Changes in___________,density,and state of matter can be signs of a chemical change
Color
Solubility
form
state of matter
- 10. Multiple Choice
The formation of a(n)___________ substance is the only sure sign of a chemical change.
Old
New
- 11. Multiple Choice
Formation of a(n)__________ might be signaled by bubbles or an odor.
Substance
Mass
Gas
Chemical change
- 12. Multiple Choice
Formation of a(n)__________, a solid that sometimes forms when two liquids combine, is a sign of a chemical change
object
Precipitate
- 13. Multiple Choice
A change in __________ might or might or not be a sign of a chemical change.It depends on whether a(n) ____________ forms.
Color, new substance
New substance, color
- 14. Multiple Choice
Energy __________ is a sign that chemical change is involved.
Energy
Release
Mass
- 15. Multiple Choice
Energy in the form of_________ is needed for chemical reactions such as photosynthesis.
light
heat
movement
- 16. Multiple Choice
______________ is chemical reaction that only occurs if plants are exposed to light.
Mass
Photosynthesis
- 17. Multiple Choice
Many changes can not be _________.
Reversed
Equal
Released
- 18. Multiple Choice
________ is always conserved during physical and chemical changes.
Mass
Light
Matter
- 19. Multiple Choice
The law of conversation of mass states that the total mass before a(n)____________ change.
Physical
Chemical
- 20. Multiple Choice
Spoiling foods are examples of_____________ change.
Chemical
Physical
- 21. Multiple Choice
The mass of a unburned match plus the mass of the oxygen it reacts with _____________ the mass of the ashes and of all the grass given off when the match burns.
Equal
Light
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