SCIENCE 8

Three main states of matter.

It has a definite shape, definite volume, low compressibility, high density, and does not flow easily.

• Solid

• Liquid

• Gas

It has a indefinite shape, definite volume, low compressibility, lower density than solids, and flows easily.

• Solid

• Liquid

• Gas

It has an indefinite shape, indefinite volume, high compressibility, very low density, and flows easily.

• Solid

• Liquid

• Gas

Event in which matter undergoes changes in physical state.

During _____, the solid absorbs energy, which eventually increases the kinetic energy of the particles, making them vibrate strongly and weakening the attractive forces between them.

During _____, the particles of a liquid lose any order and become completely free to form a gas.

______ involves heat leaving the system; as heat leaves the system, the particles lose kinetic energy and become strongly attracted to each other and form a neat arrangement.

He is a Greek philosopher and thought that all matter was made of water.

• Thales

• Anaximenes

• Heraclitus

• Aristotle

• Democritus and Leucippus

He is a Greek philosopher and thought that matter was made of air.

• Thales

• Anaximenes

• Heraclitus

• Aristotle

• Democritus and Leucippus