Water's Life-Supporting Properties Flashcards
Cohesion
Water stick to itself
Ex: Trees depend on cohesion to help transport water and nutrients from their roots to their leaves
Adhesion
Water stick to other things
Ex:The adhesion of water to the cell walls of a plan’ts thin veins also helps counter the downward pull of gravity
Surface tension
measure of how difficult it is to stretch of break the surface of a liquid. Hydrogen bonds give water unusually high surface tension, making it behave as though it were coated with an invisible film
Heat
The amount of energy associated with the movement of atoms and molecules in a body of matter.
Temperature
Measures the intensity of heat-that is, the average speed of molecules rather than the total amount of heat energy in a body of matter.
Solute
the minor component in a solution, dissolved in the solvent.
Solvent
the liquid in which a solute is dissolved to form a solution.
Solution
A liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
Explain how acids and bases directly or indirectly affect the hydrogen ion concentration of a solution
acids are substances that release their hydrogen ion(s) while bases grab hydrogen ions to themselves. SO, adding acids will increase the H+ concentration while adding bases will decrease the H+ concentration of the solution. This would be considered a direct effect.
Note:the HIGHER the H+ concentration, the LOWER the pH. Vice versa.
Acid
A compound that donates hydrogen ions to solutions
Base
a compound that accepts hydrogen ions and removes them from solution
pH Scale
describe how acidic or basic the solution is
Buffers
Substances that minimize changes in pH
Chemical Reaction. Reactants and Product
the making and breaking of Chemical bonds.
Ex: 2h2 +O2=@2H2O
Reactants: Starting Materials. (H2 and O2)
Product: Resulting Materials (H2O)
