Physical and Chemical Changes

gaseous air

liquefied air

solidified air

air spaces in soil

solids

liquids

gases

fluids

arrangement of particles

energy of particles

arrangement and energy of particles

size of particles

melting

freezing

boiling

condensing

number of particles per unit area

number of particles per unit volume

mass per unit area

mass per unit volume

good conductor of heat

good conductor of electricity

poor insulator of electricity

good insulator of electricity

brown

red

green

purple

reactors

assistors

catalysts

catalytic enzymes

complex

chromatid

celluloid

diplex

reaction of methane

reaction of water

combustion of methane

boiling of water