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Combustion reactions
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
Endothermic reactions always
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
Which is not evidence of chemical reactions?
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
What does a catalyst do in a chemical reaction?
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
A chemical equation must
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
Plants absorb and store some of the energy in sunlight through a series of reactions called
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
The splitting of water molecules into hydrogen and oxygen molecules is an example of
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
When a chemical bond is broken,
chemical change.
It speeds the reactant up.
be balanced.
absorb energy.
energy is absorbed.
photosynthesis
require oxygen.
water
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