Chemical and Physical change review

Which of the following is a physical change?

• Mixing baking soda and vinegar which causes gas bubbles.

• A glass cup falls from the counter and shatters on the ground.

• Lighting a piece of paper on fire.

• Baking a birthday cake for your mother.

Which of the following is an example of a chemical change?

• Filling a balloon up with helium.

• Taking a glass of water and freezing it in the freezer.

• A plant collecting sunlight and creating food by photosynthesis.

• Your little brother ripping up your homework.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which change can be easily reversed?

• Chemical change

• Physical change

• Both a physical and a chemical change

• Neither a physical or a chemical change

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NGSS.MS-PS1-4

When a new substance is formed with different properties than the original substance, it is called a

• chemical change.

• physical change.

• freezing.

• boiling.

• all the above

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

If the chemical properties of a substance remain unchanged and the appearance or shape of a substance changes, it is called a

• chemical change.

• physical change.

• both a physical and a chemical change.

• neither a physical or a chemical change.

Which is an example of a physical change?

• metal rusting

• silver tarnishing

• iron melting

• paper burning

• all the above

Which is an example of a chemical change?

• water freezes

• wood is cut

• wire is bent

• a precipitate forms from 2 liquids when mixed

• all the above

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

The temperature drops when baking soda is mixed with vinegar. This is

• an endothermic reaction.

• an exothermic reaction.

• neither an endothermic or exothermic reaction.

• both an endothermic and exothermic reaction.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The combustion reaction that occurs when a candle burns is an example of

• an endothermic reaction.

• an exothermic reaction.

• both an endothermic and exothermic reaction.

• neither an endothermic or exothermic reaction.

Which of the following is NOT an indicator that a chemical reaction has occurred?

• change in color

• change in shape

• change in energy

• gas bubbles

• precipitate formed

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NGSS.MS-PS1-2