3QE Vocab Review_2024

Front

Collision theory states

Back

Reactant molecules must collide with sufficient energy and proper orientation for a chemical reaction to occur.

Front

A substance is classified as either an element or a

Back

compound

Front

Two liquids can be separated by distillation due to a difference in

Back

boiling point

Front

The amount of energy required to remove the outermost electron from a gaseous atom in the ground state is known as

Back

first ionization energy

Front

The amount of energy required to melt or freeze a substance is called

Back

Heat of fusion

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is distillation?

Back

A separation process that relies on differences in boiling points of substances.

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom or ion.

Front

What is heat of vaporization?

Back

The amount of energy required to convert a substance from liquid to gas.