what change of state goes from solid to gas
sublimation
what goes from gas to liquid
condensation
what are the physical changes
change in shape
change in state
dissolving
signs of chemical change
Heat or light production
forms bubbles w/o heat
colour change
precipitation
where does photosynthesis take place
plants and bacteria
not animals
what is the molecule of sugar (glucose)
c6h1206
photosynthesis is
6h2o + 6co2+ energy-> c6 h12o6+6o2
respiration takes place in ..
all living things
what does fuel react with
oxidants
3 fire factors
heat oxidant fuel
removal of any factors of fire does what?
extinguishes
what happens in oxidation
reluctant (iron) loses electrons and oxidant (oxygen) gains electrons
what is a nuclear change
particles are rearranged making new element
what is synthesis
a+b=ab
what is decomposition
ab= b+ a
what is an acid base neutralization
when an acid and base react to form salt and water
acid +base-> salt+water
what is combustion and what does it release a lot of
is it a form of oxidation that releases a lot of energy
explain the nitrogen cycle
N2 nitrogen fixation NH3 nutrification Nox denitrification N2
what are the changes of state 5
melting boiling condensation freezing sublimation