Chemical Reactions

Chemical Reactions

Processes where (reactants) change into new (products) with different properties due to breaking and forming chemical bonds.

Signs of Chemical Reactions

Indicators such as color changes, production of gas, change in temperature, formation of precipitate, odor change, or light emission.

Combination Reaction

A type of chemical reaction where two or more reactants combine to form one product, represented as A + B -> AB.

Decomposition Reaction

A reaction where a single reactant breaks apart into two or more products, represented as AB -> A + B.

Single Replacement Reaction

A reaction where one element replaces another in a compound, represented as A + BC -> AC + B.

Double Replacement Reaction

A reaction where two compounds swap ions to form two new compounds, represented as AB + CD -> AD + CB.

Combustion Reaction

A reaction where a fuel reacts with oxygen to produce carbon dioxide, water, and energy, typically involving hydrocarbons.

Law of Conservation of Mass

A principle stating that matter cannot be created or destroyed, only rearranged, meaning the mass of reactants equals the mass of products.

Balancing Chemical Reactions

The process of ensuring the number of atoms for each element is the same on both sides of a chemical equation by adjusting coefficients.

Physical Reactions

Reactions that change the appearance of a substance without forming a new substance.

Products

Substances that are formed as a result of a chemical reaction.

Reactants

Substances that undergo a chemical change in a reaction.