Physical and Chemical Changes

photosynthesis

respiration

physical change

chemical change

113 °C

311 °C

both

none

insulate heater handles

increase heat conductivity

increase electrical conductivity

insulate electrical equipment

a new substance is formed

a substance is reversed to its components

energy is given out

atoms remain same

force of attraction

force of particles

force of elements

force of gravity

reversible

irreversible

permanent

temporary

lower than solids but higher than gases

lower than solids and gases both

higher than solids and gases both

higher than solids but lower than gases

indefinite

definite

dependent

reduced

red

orange

blue

to be stunted

heat energy

potential energy

kinetic energy

thermal energy