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Biology Chap.2.3
Basic terms for Honors Biology, Grade 9
| Question | Answer |
|---|---|
| An uneven distribution of charge | Polar |
| The force of attraction between a hydrogen molecule with a partial positive charge and another atom or molecule with a partial or full negative charge | Hydrogen Bond |
| An attractive force that hold molecules of a single substance together | Cohesion |
| The attractive force between two particles of different substances | Adhesion |
| The attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid | Capillarity |
| A mixture in which one or more substances ae dissolved in another | Solution |
| The substance dissolved in the solvent | Solute |
| The substance with the solute is dissolved | Solvent |
| The amount of solute dissolved in a fixed amount of the solution | Concentration |
| A solution in which no more solute can dissolve | Saturated Solution |
| Solutions in which water is the solvent | Aqueous Solution |
| The ion developed when a molecule of water splits and it is known as OH- because of it's negative charge | Hydroxide Ion |
| The ion developed when a molecule of water splits and, because it is H+, bonds with another water molecule to make H3O+ | Hydronium Ion |
| When the number of hydronium ions in a solution is greater than the number of hydroxide ions | Acid |
| When a solution contains more hydroxide than hydronium | Base |
| The scale for comparing relative concentrations of hydronium ions and hydroxide ions in a solution | pH Scale |
| Chemical substances that neutralize small amounts of either an acid or a base added to a solution | Buffer |