Physical and Chemical Properties and Changes of Matter

Front

What is the formula to calculate the volume of an object given its mass and density?

Back

Volume = Mass / Density

Front

If a substance has a density of 1 g/cm³, what does this imply about its mass and volume?

Back

The mass of the substance in grams is numerically equal to its volume in cm³.

Front

Define intensive property and give an example.

Back

An intensive property is a property that does not depend on the amount of substance present. Example: Hardness.

Front

Define extensive property and give an example.

Back

An extensive property is a property that depends on the amount of substance present. Example: Length.

Front

What is the difference between physical change and chemical change?

Back

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

Tags

NGSS.MS-PS1-2

Front

How do you calculate density?

Back

Density = Mass / Volume

Front

What happens to the density of a substance when it is heated?

Back

Generally, the density decreases as the substance expands when heated.

Tags

NGSS.MS-PS1-4

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity.

Front

What is a chemical property?

Back

A chemical property is a characteristic that can only be observed during a chemical reaction, indicating how a substance interacts with other substances.

Tags

NGSS.MS-PS1-2

Front

Give an example of a physical change.

Back

Melting of ice into water.

Tags

NGSS.MS-PS1-4