June exam definitions (Chemistry)

Molar Concentration

The amount of solute per unit volume of solution

Standard Solution

A solution for which the concentration is known and is unlikely to change for a period of time

Molar Mass

The mass in grams of one mole of that substance

Mole

The amount of a substance that contains the same number of particles as 12g of Carbon - 12

Molar Mass

The mass in grams of one mole of that substance

Relative Atomic Mass

The mass of one atom of an element, relative to the mass of Carbon - 12

Relative Molecular Mass

The mass of a molecule, relative to the mass of Carbon - 12

Molar concentration

Amount of solute per unit volume of solution

Solution

A homogeneous mixture of solute and solvent

Solvent

Substance in which another substance is dissolved, forming a solution

Solute

Substance dissolved in the solution

Empirical Formula

The formula that shows the simplest ratio of elements in the compound

Molecular Formula

The formula that shows the actual ratio of elements in a compound

Electrongativity

A measure of the tendency of an atom to attract a bonding pair of electrons

Covalent Bonds

The sharing of at least one pair of electrons between atoms.

Ionic Bonds

The transfer of electrons and subsequent electrostatic attraction

Intermolecular force

A force of attraction between molecules, or between atoms of noble gases

Intramolecular force

A bond between atoms within molecules