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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 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
Boiling water bubbles when heated
- 3. 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
Boiling water bubbles when heated
Salt dissolves in water
- 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
Water is boiling on a stove, producing steam. What conclusion can you make about the change that is occurring?
Boiling water bubbles indicate a chemical change
Steam indicates a state of matter change
Heat indicates a chemical change
The clear color indicates a chemical change
- 6. Multiple Choice
Which observations prove a chemical change occurred
Dissolving and expected color change
Mixing and dissolving
State of matter change and boiling water bubbles
Unexpected color change and temperature change
- 7. Multiple Choice
Which word matches the definition "two liquids make a solid"
pre-color
precipitation
precipitate
pretest
- 8. Multiple Choice
When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?
Physical change: state of matter
Chemical change: precipitate
Physical change: freezing
Chemical change: rust
- 9. Multiple Choice
Which of the following is true?
A physical change produces a new substance
A chemical change does not produce a new substance
A physical change can produce a precipitate
A chemical change can produce a precipitate
- 10. 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
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