Chemical vs physical changes

What are physical changes? Choose the best definition.

• A change in form or state without creating a new substance

• A change that always produces a gas and light

• A process that cannot be reversed under any conditions

• A change that alters chemical composition into new substances

Tags

NGSS.MS-PS1-4

Which is an example of a physical change?

• Melting ice

• Burning wood

• Rusting iron

• Digesting food

Tags

NGSS.MS-PS1-4

What are chemical changes? Choose the best definition.

• A change that forms one or more new substances with new properties

• A change in size or state only, with no new substance formed

• A temporary change that is always reversible

• A change caused only by cooling

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Signs or indicators of chemical changes include which of the following? Select all that apply.

• Unexpected color change

• Gas production (bubbles) without boiling

• Temperature change not caused by heating or cooling from outside

• Change of state such as melting or freezing

Tags

NGSS.MS-PS1-2

Identify if the action depicts a physical or chemical change: cutting an apple.

• Physical change

• Chemical change

Identify if the action depicts a physical or chemical change: baking a cookie.

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify if the action depicts a physical or chemical change: burning wood.

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify if the action depicts a physical or chemical change: melting ice.

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Identify if the action depicts a physical or chemical change: rotting fruit.

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify if the action depicts a physical or chemical change: digesting food.

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5