Properties of Matter, Water and pH (8.6A,C,D)

Front

What is cohesion in the context of liquids?

Back

Cohesion is the force that causes molecules of the same substance to stick together, such as water molecules sticking to each other.

Front

What is adhesion in the context of liquids?

Back

Adhesion is the force that causes molecules of different substances to stick together, such as water molecules sticking to a straw.

Front

What is surface tension?

Back

Surface tension is the elastic-like force existing at the surface of a liquid, caused by the attraction of liquid molecules to each other.

Front

What is capillary action?

Back

Capillary action is the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, and surface tension.

Front

How does cohesion affect the boiling point of water?

Back

Cohesion increases the boiling point of water because it requires more energy to break the bonds between water molecules.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, consisting of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform, such as a salad.

Front

What is the pH scale?

Back

The pH scale is a measure of how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.