Matter

absolute zero

The coldest temperature that anything can possibly get and at which all energy is removed from it.

atom

The smallest particle of an element; it contains protons, neutrons, and electrons and makes up all matter.

solubility

The degree to which a substance will dissolve into another substance.

melting point

Temperature at which a solid changes into a liquid.

proton

Particle with a positive charge found inside the nucleus of an atom.

neutron

Particle with no charge found inside the nucleus of an atom.

element

Substance that is composed of just one type of atom and cannot be reduced to simpler substances by normal chemical means.

compound

Substance made up of two or more different types of atoms joined together by chemical bonds.

atomic arrangement

The way atoms are arranged.

chromatography

Process for separating mixtures of substances with different boiling points or solubility.

buoyancy

The ability of a substance to float in a liquid.

density

A ratio that describes how tightly packed the molecules in a substance are by comparing the mass to the volume.

conductivity

The degree to which a substance can conduct electricity.

ductibility

The degree to which a substance will stretch or bend without breaking.

matter

Anything that has mass and takes up space.

boiling point

The temperature at which a liquid changes into a gas.

condensation point

Temperature at which a gas change into a liquid.

freezing point

Temperature at which a liquid changes into a solid.

nucleus

The small dense part in the center of an atom containing protons and neutrons.

state of matter

One of the three forms that matter can take, either liquid, gas, or solid.

reactive

A substance that easily combines with other substances

property

A trait or characteristic that helps to identify a substance.

electron

Small particle with a negative charge that travels fast around an atom.