Physical & Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Tags

NGSS.MS-PS1-4

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

List three indicators of a chemical change.

Back

1. Change in color 2. Production of gas 3. Formation of a precipitate

Tags

NGSS.MS-PS1-2

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as it changes from solid to liquid without changing its chemical structure.

Tags

NGSS.MS-PS1-4

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change, as it transforms into ash and gases, creating new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-4

Front

What does it mean when a change is reversible?

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A reversible change is one that can be undone, returning the substance to its original state, typically associated with physical changes.

Front

What does it mean when a change is irreversible?

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An irreversible change is one that cannot be undone, resulting in the formation of new substances, typically associated with chemical changes.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a precipitate?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

Tags

NGSS.MS-PS1-2

Front

What is an example of a clue that indicates a chemical change has occurred?

Back

The production of gas bubbles is a clue that a chemical change has occurred.

Tags

NGSS.MS-PS1-2