Intro to Matter (Substances/Mixtures)

Front

What is an element?

Back

An element is a substance made up of one kind of atom.

Front

What is a heterogeneous mixture?

Back

A mixture that is NOT evenly distributed.

Front

What is a homogeneous mixture?

Back

A mixture that appears to be evenly mixed throughout.

Front

Give an example of a homogeneous mixture.

Back

Saltwater solution.

Front

What is a compound?

Back

A compound is two or more different elements in proportion.

Front

What is the difference between a substance and a mixture?

Back

A substance has a uniform and definite composition, while a mixture consists of two or more substances that retain their individual properties.

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance is dissolved in another.

Front

What is the law of definite proportions?

Back

The law states that a chemical compound contains its component elements in fixed ratio by mass.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.