Science Chapter 7 Vocabulary

Front 1

solution

Back 1

a uniform mixture that contains a solvent and at least one solute

Front 2

solvent

Back 2

the part of a solution present in the largest amount and dissolves other substances

Front 3

solute

Back 3

the substance that is present in a solution in a smaller amount and is dissolved by the solvent

Front 4

colloid

Back 4

a mixture that contains small, undissolved particles that do not settle out

Front 5

suspension

Back 5

a mixture in which particles can be seen and easily separated but settling or filtration

Front 6

concentrated solution

Back 6

a lot of solute dissolved in a certain amount of solvent

Front 7

dilute solution

Back 7

only a little solute dissolved in a certain amount of solvent

Front 8

solubility

Back 8

a measure of how much solute can dissolve in a solvent at a given temperature

Front 9

unsaturated solution

Back 9

a mixture that contains less dissolved solute than is possible at a given temperature

Front 10

saturated solution

Back 10

a mixture that contains as much dissolved solute as is possible at a given temperature

Front 11

supersaturated solution

Back 11

a mixture with more dissolved solute than is predicted by its solubility at the given temperature

Front 12

corrosive

Back 12

to wear away other materials

Front 13

indicator

Back 13

a compound that changes color when in contact with an acid or a base

Front 14

bases

Back 14

a group of compounds that can be identified by their common properties: tastes bitter, feels slippery, and turns red litmus paper blue; a pH higher than 7

Front 15

acids

Back 15

a group of compounds whose characteristic properties include the kinds of reactions they undergo; tastes sour, reacts with metals and carbonates, and turns blue litmus paper red; a pH lower than 7

Front 16

hydrogen ion (H+)

Back 16

an atom of hydrogen that has lost its electron; the key to the reactions of acids

Front 17

hydroxide ion (OH-)

Back 17

a negative ion, made of oxygen and hydrogen.
when dissolved in water, the positive ions and hydroxide ions separate

Front 18

pH scale

Back 18

a range of values from 0 to 14; expresses the concentration of hydrogen ions in a solution

Front 19

neutral

Back 19

if the pH is 7; neither an acid or a base

Front 20

neutralization

Back 20

a reaction between an acid and a base

Front 21

salt

Back 21

any ionic compound that can be made from the neutralization of an acid and a base