Unit 9 Part 1

Front

What is the Tyndall Effect?

Back

The Tyndall Effect is the scattering of light by particles in a colloid or in very fine suspensions. It is not visible in solutions.

Front

What type of change is rusting of a bicycle?

Back

Rusting of a bicycle is a chemical change.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity, such as color, shape, or boiling point.

Front

What is a compound?

Back

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

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances.

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance (the solute) is dissolved in another (the solvent).

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the components are not uniformly distributed and can be easily distinguished.

Front

What is a colloid?

Back

A colloid is a mixture where tiny particles are dispersed throughout a substance but do not settle out, such as milk.

Front

What is the difference between a chemical property and a physical property?

Back

A chemical property describes a substance's ability to undergo a chemical change, while a physical property can be observed without changing the substance's identity.

Front

What is an element?

Back

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