Unit 3- Classification of Matter

Front

What is a supersaturated solution?

Back

A supersaturated solution is a solution that contains more dissolved solute than it can normally hold at a given temperature. It is created by heating a saturated solution and then cooling it down.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is the difference between pure substances and mixtures?

Back

Pure substances have only one type of particle, while mixtures contain two or more different particles.

Front

What type of solution is needed to grow rock candy?

Back

A supersaturated solution is needed to grow rock candy.

Front

What differentiates elements from compounds?

Back

Elements contain only one type of atom, while compounds are made up of two or more different types of atoms chemically bonded together.

Front

What is a saturated solution?

Back

A saturated solution is a solution that has dissolved the maximum amount of solute at a given temperature and pressure.

Front

What is an unsaturated solution?

Back

An unsaturated solution is a solution that can still dissolve more solute at a given temperature and pressure.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and digestion.

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 compound?

Back

A compound is a substance formed when two or more different types of atoms bond together chemically.