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The substances you start with in the chemical reaction.
Reactants
The substances that form as the result of a chemical reaction
Products
A scientific law that states that matter is neither created nor destroyed during a chemical reaction. It only changes forms.
conservation of matter
The most element exists in the Earth crust
O2
The most two Elements exist in the water
O2 and H2
The most Element exist in the air ?
N2
is the process in which plants make sugar.
Photosynthesis
is the process by which plants break down sugar.
Respiration
sugars + oxygen are the reactants in the photosynthesis process {true or false )
false
carbon dioxide + water are the reactants in the Respiration process ( true or false )
false
