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- 1. Multiple Choice
A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?
The powder DISSOLVED in the water
The water turned the COLOR yellow
The bag's TEMPERATURE changed
The STATE OF MATTER changed
- 2. Multiple Choice
Which of the following options provides evidence of a CHEMICAL change?
Wood is burned releasing ash and smoke
Rocks separate when soil is sifted
Water turns to ice when you put it in the freezer
Salt dissolves in water
- 3. Multiple Choice
Which of the following examples provides evidence of a PHYSICAL change?
Wood is burned and releases ash and smoke
Iron rusts over time
When mixed, baking soda and vinegar form gas bubbles
A piece of paper changes shape when you rip it up
- 4. Multiple Choice
A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?
Physical change
Chemical change
No change
- 5. Multiple Choice
Which observations prove a chemical change has occurred?
Dissolving and expected color change
Mixing and dissolving
State of matter change and boiling water bubbles
Unexpected color change and temperature change
- 6. Multiple Choice
When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?
Physical change: state of matter
Chemical change: production of a solid
Physical change: freezing
Chemical change: rust
- 7. Multiple Choice
When iron is exposed to air over a long period of time, it forms rust. This is an example of what?
A new substance forming
Color change: no new substance
Shape change: no new substance
Burning: a new substance
- 8. Multiple Choice
A physical change...
Changes the physical properties of an object, but does not create a new substance.
Creates a new substance and cannot be undone.
- 9. Multiple Choice
A chemical change...
Changes the physical properties of an object, but does not create a new substance.
Creates a new substance and cannot be undone.
- 10. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 11. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 12. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 13. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 14. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 15. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 16. Multiple Choice
Is this an example of a physical or chemical change?
Physical
Chemical
- 17. Multiple Choice
Melting a chocolate bar is a...
Physical change
Chemical change
- 18. Multiple Choice
Which of the following is NOT an example of a physical change?
Crumpling paper
Sharpening a pencil
Clothes shrinking in the dryer
Milk turning sour
- 19. Multiple Choice
A change in which NEW substances are formed.
Chemical change
Physical change
- 20. Multiple Choice
Which of the following is NOT an example of chemical change?
Milk turning sour
Burning wood
Breaking a pencil
Metal turning rusty
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