Chapter 7 Acids, Bases, and Solutions

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1

What is a solution?

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

2

What part of a solution is the solvent?

the part present in the largest amount

3

What part of a solution is the solute?

the substance that is present in the smallest amount and is dissolved by the solvent

4

A mixture that contains small, undissolved particles that do not settle out is a called?

colloid

5

Give an example of a colloid.

Milk, fog, gelatin, mayonnaise

6

A mixture in which particles can be seen and easily separated by settling or filtration is know as what?

suspension

7

Give an example of a suspension.

Water and pepper; snowglobe

8

What do solutes do to the freezing point and boiling point of solvents?

lower the freezing point, raise the boiling point

9

What kind of a solution has a lot of solute dissolved in a certain amount of solvent?

concentrated

10

What kind of solution has a little solute dissolved in a certain amount of solvent?

dilute

11

What is solubility?

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

12

If you have added so much solute to a solution that no more dissolves, you have what kind of solution?

saturated

13

What factors affect solubility?

pressure, type of solvent, and temperature

14

What kind of solution has more dissolved solute than is predicted by its solubility at a given temperature?

supersaturated

15

What are the properties of an acid?

tastes sour, reacts with metals, reacts with carbonates, turns blue litmus paper red

16

What does corrosive mean?

wears away other materials

17

What are the properties of a base?

tastes bitter, feels slippery, does not react with metals, turns red litmus paper blue

18

What kinds of ions do acids form in water?

hydrogen ions (H+)

19

What kinds of ions do bases form in water?

hydroxide ions (OH-)

20

Having a pH of 6 or lower indicates that something is?

acidic

21

Having a pH of 8 or greater indicates that something is?

basic

22

What has a pH of 7 and is known as the "universal solvent"?

water

23

A reaction between an acid and a base is know as what?

neutralization

24

What is produced in a neutralization reaction?

a salt and a water

25

What does the pH scale do?

expresses the concentration of hydrogen ions in a solution