Matter
Anything that has mass and takes up space
Element
A pure substance made of only one kind of atom
Compound
A substance made up of atoms of two or more different elements joined by chemical bonds
Atom
Smallest particle of an element
Molecule
A group of atoms bonded together
Lattice
grid-like structure of atoms
pure substance
consists of only one type of matter
Mixture
a substance made by mixing other substances together.
Allotrope
Different forms of the same element
Hydrogen
H 1
Helium
He 2
lithium
Li 3
Beryllium
Be 4
Boron
B 5
Carbon
C 6
Nitrogen
N 7
Oxygen
O 8
Fluorine
F 9
neon
Ne 10
Aluminum
Al 13
Silicon
Si 14
Sodium
Na 11
Magnesium
Mg 12
Phosphorus
P 15
Sulfur
S 16
Chlorine
Cl 17
argon
Ar 18
Potassium
K 19
Calcium
Ca 20
Iron
Fe 26
copper
Cu 29
Zinc
Zn 30
Silver
Ag 47
Lodine
I 53
Gold
Au 79
Manganese
Mn 25
Nickel
Ni 28
bromine
Br 35
Tin
Sn 50
Barium
56 Ba
Mercury
Hg 80
Uranium
U 92
Properties of metals
Shiny luster, high malleability(bent), ductility(stretched into wire's), electrical and thermal conductivity.
why metals are good conductors
Structure share electrons allowing heat & electricity to travel
Solids shape
Fixed shape
liquids shape
shape of container
gas shape
No shape
Expansion
Increase temperature
contraction
Decrease in temperature
Diffusion
Movement of molecules from an area of higher concentration to an area of lower concentration.
physical change
a change of matter from one form to another without a change in chemical properties