Chemical and Physical Change Examples Explained

What is the main difference between chemical and physical changes?

• Chemical changes produce new substances, while physical changes do not.

• Physical changes produce new substances, while chemical changes do not.

• Both chemical and physical changes produce new substances.

• Neither chemical nor physical changes produce new substances.

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NGSS.MS-PS1-4

Which of the following is a sign of a chemical change?

• Change in state

• Change in shape

• Change in temperature

• Change in texture

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NGSS.MS-PS1-2

What does the formation of bubbles usually indicate?

• A change in state

• A new gas being produced

• A change in texture

• A physical change

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT a sign of a chemical change?

• Change in shape

• Change in color

• Formation of a precipitate

• Production of an odor

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NGSS.MS-PS1-2

What happens to a substance during a physical change?

• Its original properties are altered.

• It becomes a new substance.

• It remains the same substance.

• It produces a new gas.

What is an example of a physical change?

• Burning wood

• Baking a cake

• Rusting iron

• Melting gold

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the result of adding liquid nitrogen to thermite?

• It stops the thermite reaction.

• It cools down the thermite.

• It makes the thermite reaction more intense.

• It neutralizes the thermite.

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NGSS.MS-PS1-2

NGSS.MS-PS1-4

What happens when thermite is placed on a car's engine block?

• The engine block remains intact.

• The thermite cools down.

• The car's paint changes color.

• The engine block melts.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the expected reaction when rubidium is dropped in water?

• No reaction

• A small fizz

• A mild reaction

• A hand grenade-like explosion

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NGSS.HS-PS1-4

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What is the reaction of cesium when it comes into contact with water?

• It remains unchanged.

• It produces a small fizz.

• It dissolves slowly.

• It creates a depth charge-like explosion.

Tags

NGSS.MS-PS1-2