Anything that takes up space, and has mass.
Can be living such as trees, insects, and humans. It can also be non-living like wood, rocks, metal, air, water.
Is made up of tiny particles called atoms.
Everything on our Earth is in one of three states – solid, liquid or gas.
Atoms - are building blocks of all matter.
Structure and Properties of Atoms Atomic number (Z) an element gives the number of protons in the atom and determines which element the atom is.
Mass number of an element is the number of protons plus the number of neutrons in an atom of that element.
Structure and Properties of Matter Matter comes in three forms:
1) Solids are arranged in a fixed pattern and held very closely together.
2) Liquids The particles in a liquid possess more energy than the particles of solids. Therefore, the particles have some space between them and so can move easily or flow. 3) Gases The particles in gases are very loosely held together Model of three states of matter Expansion and Contraction of Matter Expansion – something that grows big Contraction – something that grows small