PS Unit 3 Review

Front

How can mixtures be separated?

Back

By physical means.

Front

What ALWAYS happens during a chemical reaction?

Back

A new substance is formed.

Front

What type of mixture is evenly mixed throughout?

Back

Homogeneous.

Front

Which type of bond holds atoms together in molecules?

Back

Electromagnetic forces.

Front

Which type of reaction absorbs energy and makes the surroundings colder?

Back

Endothermic.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout.

Front

What is a heterogeneous mixture?

Back

A mixture that has a non-uniform composition.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is an endothermic reaction?

Back

A reaction that absorbs heat from its surroundings.