Has mass and takes up space
What is Matter?
Boiling Point
Physical
horiztonal rows
periods
How many protons neutron and electrons are in Sodium
P=11
E= 11
N= 12
Occurs when thermal energy is added to a solid
melting
silicon or nitrogen, for example
What are elements?
combustion
chemical
vertical columns
groups
Mg+2
p= 12
e= 10
n= 12
occurs when solute mixes evenly in a solvent
solution/homogenous
Composition that is always the same
homogenous mixture
burning
chemical
positively charged ion
cation
Carbon-13
p= 6
e= 6
n= 7
What is the formula for density
calcium chloride
what is a compound
Density
Physical
negatively charged ion
anion
Osmium
p= 76
e= 76
n= 114
Two size-dependent properties
mass volume
Brass
homogenous mixture
Malleable
Physical
change in mass number
isotope
202Mercury-3
p= 80
e= 83
n= 122
gas