Unit 1 Ch. 2 Lab Simulation Basic Chemistry Properties of H2O

Adhesion

Water’s tendency to attract and bind to polar molecules or surfaces.

Cohesion

Water’s tendency to attract and bind to other water molecules.

Electronegativity

measure of an atom’s ability to attract pairs of electrons; a higher electronegativity results in a greater pull on electrons.

Heat Capacity

Amount of heat required to raise the temperature by one degree Celsius.

Heat of Vaporization

Amount of heat required to change a liquid to a gas.

Hydrogen Bond

Electrostatic attraction between a hydrogen atom with a partial positive charge and an atom with a partial negative charge.

Polar

Describes a molecule formed by polar covalent bonds; this results in partial charges on opposite ends of the molecule.

Polar Covalent Bond

Connective force in which electrons are shared unequally between two atoms.

Solute

Substance that is dissolved into the solvent of a solution.

Solution

Liquid that contains dissolved solute(s) in a solvent.

Solvent

Liquid portion of a solution that dissolves solutes.

Surface Tension

Force that holds molecules together at a liquid’s surface due to hydrogen bonding between the molecules.