Evidence of a chemical change

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances with different properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an indicator of a chemical change?

Back

A change in temperature with no outside heat source applied.

Tags

NGSS.MS-PS1-2

Front

What happens when acid is dropped on chalk?

Back

It can produce bubbles, indicating a release of gas, which shows a chemical reaction.

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NGSS.MS-PS1-2

Front

What is an example of a chemical change?

Back

Frying an egg, as it transforms raw ingredients into a new substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a result of a chemical change?

Back

The formation of a new substance.

Tags

NGSS.MS-PS1-2

Front

What does the production of gas indicate in a chemical reaction?

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It shows that a chemical change has occurred.

Tags

NGSS.MS-PS1-2

Front

What are some signs of a chemical change?

Back

Color change, temperature change, gas production, and formation of a precipitate.

Tags

NGSS.MS-PS1-2

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What does not indicate a chemical change?

Back

Loud sounds produced during fireworks do not indicate a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a precipitate?

Back

A solid that forms from a solution during a chemical reaction.

Tags

NGSS.MS-PS1-2

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in new substances.

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NGSS.MS-PS1-4