1. The particle nature of matter

Includes anything that has mass

Matter

Describes the ability to work

Energy

Distinguishing characteristics that we use to identify different samples of matter

Properties

Two types of properties

Physical and Chemical properties

The amount of space that a substance or object occupies

Volume

_______ and ______ believed that nature is consisted of two things

Leucippus and Democritus

Who said that ‘‘atoms are indestructible and completely full’’

Democritus

A greek word which means indivisible particle

Atomos

Who said that all matters as being composed of four basic elements; Fire,Earth,Water, and Wind

Aristotle

Who presented the concrete evidence that all matter is made of very small particles called atoms?

John Dalton

The smallest particle of an element that has all properties of an element

Atoms

Particle that consist two or more atoms combined together

Molecule

The temperature of a liquid at which it change to steam or vapor

Boiling pont

The process of turning from liquid into gas

Evaporation

gaseous form of water

Water vapor

The process where gas change into liquid

Condensation

The temperature at which it changes state from solid to liquid

Melting point

The process where a solid change into liquid

Melting

The process where liquid is changed into solid

Freezing

A way of describing how tighly a substance is, how close together its molecules and atoms are, or how mycg mass is in a given volume

Density

A measure of density relative to the density of a reference substance.This reference material could be anything, but the most common reference is pure water

Specific gravity

The common reference material of a specific gravity

Pure water

1 type of chemical compound. It is separated and created chemically and has a fixed ratio.

Pure substance

2 or more different substances. it can be separated and combined physically and has an indefinite ratio

Mixture