Chemistry Ch. 4 - Reactions and Aqueous Solutions

Combination Reactions

Two substances combine to create one substance
Ex) A + B = AB

Combustion Reactions

Has one oxidizer and combustible material to create heat and light

Decomposition Reactions

One substance breaks down into two different substances
Ex) AB = A + B

Aqueous

Substances dissolved in water. It is a universal solvent, mainly liquid

Solution

A homogenous mixture

Solvent

The more occurring substance

Solute

The substance being dissolved

Dissociation

When an ionic substance gets pulled apart by their charges

Molecular substance

They dissolve but no ions are formed

Electrolytes

They create ions when dissolved and conduct electricity

Strong Electrolyte

Completely dissociates when dissolved
Ex) Soluble ionic compounds, acids, bases

Weak Electrolyte

Only partially dissociate when dissolved in water
Ex) Weak acids, weak bases

Nonelectrolytes

Dissolve in water but don’t form ions
Ex) Molecular compounds (excluding acids and bases), insoluble ionic compounds