Physical and Chemical Changes

Front

What is a chemical change?

Back

A chemical change is 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 a physical change?

Back

A physical change is a process that alters the form or appearance of a substance without changing its chemical composition.

Front

Give an example of a chemical change in the human body.

Back

The acid in the stomach breaking down food is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to milk when it sours?

Back

Souring milk is an example of a chemical change due to the fermentation process.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What type of change occurs when pancakes are fried on a griddle?

Back

Frying pancakes is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical change involving glass?

Back

Broken glass is an example of a physical change, as its composition remains the same.

Front

What happens to water when it is heated to steam?

Back

When water is heated and changes to steam, it undergoes a physical change.

Tags

NGSS.MS-PS1-4

Front

What are the indicators of a chemical change?

Back

Indicators of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Tags

NGSS.MS-PS1-2

Front

What are the indicators of a physical change?

Back

Indicators of a physical change include changes in state (solid, liquid, gas), shape, and size without altering the substance's chemical identity.

Front

Can a chemical change be reversed?

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Chemical changes are often not reversible, as they result in the formation of new substances.