Physical and Chemical Changes

molecules and their arrangement

linked atoms

type of hydrocarbon

properties of elements

water

soil

fertilizers

insecticides

melting

freezing

condensation

sublimation

lower than liquids but higher than gases

higher than liquids but lower than gases

higher than both liquids and gases

lower than both liquids and gases

iron sulfate

sulphur ironide

iron sulfite

iron sulfide

lubricants

detergents

perfumes

deodorants

high temperatures

low pressures

high pressures

low temperatures

Fe

Su

S

Ti

ammonia

chlorine

hydrogen

methane

nitrogen and hydrogen

nitrogen and oxygen

nitrogen and methane

methane and oxygen