Unit 3 Review

Front

What is adhesion?

Back

Adhesion is the attraction between different substances, such as water molecules sticking to a leaf.

Front

What is cohesion?

Back

Cohesion is the attraction between water molecules, causing them to stick together.

Front

What is a mixture?

Back

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

Front

What is a compound?

Back

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

Front

What is surface tension?

Back

Surface tension is the cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.

Front

What does pH measure?

Back

pH measures the acidity or basicity of a solution.

Front

Which is more acidic: lemon juice or hydrochloric acid?

Back

Hydrochloric acid is more acidic than lemon juice.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound.

Front

What is the difference between a mixture and a compound?

Back

A mixture retains the properties of its components, while a compound has different properties from its elements.