States of Matter and Physical/Chemical Properties

physical change

A change in a substance that does not involve a change in the identity of the substance

chemical change

A change that occurs when one or more substances change into entirely new substances with different properties.

Gas

A form of matter that flows to conform to the shape of its container, fills the container's entire volume, and is easily compressed

Liquid

A form of matter that flows, has constant volume, and takes the shape of its container.

Plasma

A gas-like state of matter consisting of a mixture of free electrons and atoms that sre stripped of their electrons

Particle

A general name for atoms and molecules (and ions)

Solid

A phase of matter that holds its shape and does not flow

chemical property

A property of matter that describes a substance's ability to participate in chemical reactions.

physical property

A quality or condition of a substance that can be observed or measured without changing the substance's composition

Kinetic Theory of Matter

All matter is made up of atoms and molecules that act like tiny particles. The tiny particles are always in motion. The higher the temperature, the faster they move

thermal expansion

Increase in the size of a substance when the temperature is increased.

condensation

The change from a gas to a liquid

freezing point

The temperature at which a liquid changes into a solid.

boiling point

The temperature at which a liquid changes to a gas.

melting point

The temperature at which a substance changes from a solid to a liquid.