SOL 5.7: Matter, Mixtures, and Phase Changes

Vocabulary flashcards covering 5th Grade Science SOL 5.7 concepts including matter, mass, atoms, mixtures, solutions, phases of matter, and phase changes.

Matter

Anything that has mass and takes up space (volume), and exists as a solid, liquid, or gas.

Mass

The amount of matter contained in an object.

Volume

The amount of space that matter occupies or takes up.

Atoms

The fundamental particles that matter can be subdivided into, which are too small to see but can be detected by other means.

Mixture

A combination of two or more substances that do not lose their identifying characteristics and do not undergo changes in their physical properties.

Solution

A special type of mixture in which one substance is uniformly dissolved in a liquid.

Solid

A phase of matter represented by atoms or particles packed closely together in a regular, orderly arrangement.

Liquid

A phase of matter represented by particles that remain close together but are free to slide past one another without a rigid structure.

Gas

A phase of matter represented by particles that are spaced widely apart and move freely through space.

Temperature Increase (Phase Transition)

The addition of heat energy that causes matter to change from a solid to a liquid, and then from a liquid to a gas.

Temperature Decrease (Phase Transition)

The removal of heat energy that causes matter to change from a gas to a liquid, and then from a liquid to a solid.

Conservation of Mass in Phase Changes

The principle that matter neither gains nor loses mass during a change in state or phase.