Units 1-4 Review

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• 1 substance

• 2 substances

• 3 substances

• 4 substances

• Material 1 is a rubber ball. Material 2 is a piece of cardboard.

• Material 2 is an aluminum washer. Material 3 is a copper wire.

• Material 3 is a piece of cardboard. Material 4 is an aluminum washer.

• Material 1 is a copper wire. Material 4 is a rubber ball.

• Mixtures 3 and 4 only

• Mixtures 1, 3, and 4

• Mixtures 1, 2, and 5

• Mixtures 2 and 5 only

Which change occurs when lemon juice is mixed with water?

• The mass of the lemon juice decreases.

• The water becomes a solid.

• The lemon juice dissolves and spreads out evenly in the water.

• The volume of the water decreases.

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• Thermal

• Mechanical

• Electrical

• Sound

• Switches 1 and 3

• Switches 1 and 4

• Switches 2 and 3

• Switches 3 and 4

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