Physical Science

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is a chemical change?

Back

A chemical change occurs when substances combine or break apart to form new substances, often indicated by bubbles, color change, or heat.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A physical change is a change in the form or appearance of a substance without altering its chemical composition.

Front

What happens when a solid changes to a liquid?

Back

This process is called melting.

Tags

NGSS.MS-PS1-4

Front

What is the melting point?

Back

The melting point is the temperature at which a solid becomes a liquid.

Tags

NGSS.MS-PS1-4

Front

What is the mass of a mixture?

Back

The mass of a mixture is the total mass of all components combined.

Front

What is an example of a mixture?

Back

A fruit salad is an example of a mixture.

Front

What is the difference between a mixture and a solution?

Back

A mixture can be separated by physical means, while a solution is a homogeneous mixture where the solute is dissolved in the solvent.

Front

What indicates a chemical change has occurred?

Back

The formation of bubbles, a color change, or the release of heat can indicate a chemical change.

Tags

NGSS.MS-PS1-2

Front

What is the freezing point?

Back

The freezing point is the temperature at which a liquid becomes a solid.

Tags

NGSS.MS-PS1-4