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Chemical reactions
When 1 or more substance form / change into a new substance
Balancing chemical equations
You must have the same # of element on the reactant side as the the product side
Law of conservation of mass
Total mass of reactants = total mass of products t
Chemical equation
Decribes a chemical reaction using formulas and symbols
➡️ means
Produces of forming
+ means
Plus
(S)
Solid
(L) means
Liquid
(G) means
Has
(aq) means
Aqueous a substance is dissolve in water
Heat ➡️
The reactant are heated
Light ➡️
The reactants are exposed to light
Elec ➡️
An electron current I applied to the reactant
Combustion reaction
A substances reacts with oxygen to produce energy in the from of heat& light chemical equation.
Synthesis reaction
2 or more substances form a compound
Decomposition reaction
Compound breaks down into 2 or more substances
Single displacement
An element replaces an element in a compound
Double displacement
The positive ions from 2 compounds swap
Oxidation
Loosing electrons
Reduction
Gaining electrons
Has subscript 2 In formula
Combustion reaction
A+B➡️AB
Synthesis
AB➡️A+B
Decomposition reaction
Single displacement
A+BC➡️AC+ B