types of reactions synthesis , decomposition, combustion

decomposition of a metal carbonate (CO₃^-2) turns into

a metal oxide + carbon dioxide (CO2)

decomposition of a metal nitrate (NO₃^-1) turns into

a metal nitrite (NO₂) + oxygen gas (O₂)

decomposition of a metal hydroxide (OH^-1) turns into

metal oxide + water (H₂O)

synthesis of a metal oxide + water (H₂O)

forms a BASE 

• has OH in formula 

• has aq at end

synthesis of non metal oxide + water (H₂O)

forms an ACID

• starts with H

• has aq at the end

combustion

the reaction of a substance with oxygen to produce oxides, heat, light

how to recognize :
- O2 will be one of the reactants.
- heat, light, and an oxide will be the products

complete combustion

fuel + oxygen ——> carbon dioxide + water

incomplete combustion

fuel + oxygen ——> carbon dioxide + water + carbon monoxide + carbon.

coefficients 

shows number of molecules in an element

subscripts

shows number of atoms in an element

reactants

substance that starts a chemical reaction
— left side of equation

products

substance produced by chemical reaction 

— right side of equation