Modeling Matter Unit Review

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What are molecules?

Back

Molecules are groups of two or more atoms bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

Front

What happens to molecules in hot air?

Back

Hot air molecules move quickly, which helps the hot air balloon to rise.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither a definite shape nor volume.

Front

What is density?

Back

Density is the mass of a substance divided by its volume.

Front

How can you identify a substance?

Back

You can identify a substance by testing its properties, such as solubility, density, and reactivity.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent.

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance with new properties.

Front

What is a physical change?

Back

A physical change is a change in which the form or appearance of a substance changes, but its chemical composition remains the same.