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24 terms

Chapter 7: Acids, Bases, & Solutions

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Solution
a well-mixed mixture that contains a solvent and at least one solute.
Solvent
the part of a solution present in the largest amount.
Water
"universal solvent".
Colloid
is a mixture containing small, undissolved particles that do not settle out.
Solute
what gets dissolved by the solvent
Suspension
is a mixture in which particles can be seen and easily separated by settling or filtration.
dilute solution
a mixture that has only a little solute dissolved in a certain amount of solvent.
concentrated solution
a solution that has a lot of solute dissolved in the same amount of solvent.
solubility
is a measure of how much solute can dissolve in a solvent at a given temperature.
unsaturated solution
if you can continue to add more solute to the solution
supersaturated solution
has more dissolved solute than is predicted by its solubility at the given temperature.
Acid
a substance that tastes sour, reacts with metals and carbonates, and turns blue litmus paper red
corrosive
they eat away at other materials
indicator
compound that changes color when in contact with an acid or a base
base
substance that tastes bitter, feels slippery, and turns red litmus paper blue
hydrogen ion (H+)
an atom of hydrogen that has lost its electron
hydroxide ion (OH-)
the negative ion made of oxygen and hydrogen
pH scale
range of values from 0-14.
neutralization
reaction between an acid and a base
salt
any ionic compound that can be made from the neutralization of an acid with a base
acid
any substance that produces hydrogen ions in water
digestion
breaks down the complex molecules of foods into smaller molecules
mechanical digestion
physical process where large pieces of food are torn and ground into smaller pieces
chemical digestion
breaks large molecules into smaller ones