Types of Chemical Reactions

1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product. Example: $$A + B -> AB$$ .

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products. Example: $$AB -> A + B$$ .

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound. Example: $$A + BC -> AC + B$$ .

A double replacement reaction is a type of chemical reaction where the anions and cations of two different compounds exchange places to form two new compounds. Example: $$AB + CD -> AD + CB$$ .

Combustion is a chemical reaction that occurs when a substance reacts rapidly with oxygen, producing heat and light. Example: $$C_xH_y + O_2 -> CO_2 + H_2O$$ .

Count the subscripts in the formula. For example, in $$C_6H_{12}O_6$$ , there are 6 carbon atoms.

A chemical change results in the formation of new substances, while a physical change does not change the substance's chemical identity.

Adjust the coefficients in front of the compounds to ensure the number of atoms for each element is the same on both sides of the equation.

2, 1, 2 (Balanced equation: $$2Mg + O_2 -> 2MgO$$ )