Classification of Matter

These flashcards cover key vocabulary terms and concepts related to the classification of matter discussed in the lecture.

What is Matter?

Anything that takes up space and has mass.

Substance

A type of matter that has a fixed composition; all particles are identical.

Mixture

A combination of two or more substances that are physically combined with variable composition.

Element

The simplest form of matter, consisting of identical atoms, found on the Periodic Table.

Compound

A substance formed when two or more elements are chemically combined in a fixed proportion.

Homogeneous Mixture

A mixture where components are evenly distributed and appear blended, like solutions.

Heterogeneous Mixture

A mixture where components are not evenly distributed and can be seen separately, like salad dressing.

Difference between Element and Compound

An element is a single substance; a compound is multiple elements chemically combined.

Water (H2O) is formed from hydrogen and oxygen elements in a fixed proportion.

Example of a Compound

Salt water, because it has a uniform composition.

Example of a Homogeneous Mixture

Salad dressing, as the components can be seen separately.

Example of a Heterogeneous Mixture

Mixture of Elements

Compounds (pure substance)

Mixture of Elements

Mixture of Elements and compounds

Elements (pure substances)