Lesson 2.2

Question 1

Is water a polar molecule

Answer 1

Yes

Question 2

a molecule that has slightly charged regions

Answer 2

polar molecule

Question 3

molecules that don’t have charged regions

Answer 3

non-polar molecule

Question 4

form b/w slightly (+) hydrogen atoms and slightly (-) atoms

Answer 4

Hydrogen bonds

Question 5

Hydrogen bonds are responsible for __ important properties of water

Answer 5

3

Question 6

water resisting change in temp.

Answer 6

high specific heat

Question 7

attractions b/w molecules of same substance ex: water surface tension

Answer 7

cohesion

Question 8

attractions b/w molecules of diff. substance ex: water molecules stuck on bottle

Answer 8

adhesion

Question 9

formed when one substance dissolves in another

Answer 9

solution

Question 10

a solution is a __________ mixture

Answer 10

homogeneous

Question 11

dissolve other substance (higher concentration)

Answer 11

solvent

Question 12

dissolve in solvent (less concentrated)

Answer 12

solute

Question 13

Polar solvents dissolve ________ solutes

Answer 13

polar

Question 14

non polar solvents dissolve ____________ solutes

Answer 14

non polar

Question 15

polar substance and non polar substance generally remain ______ ex: water and oil

Answer 15

separate

Question 16

Acids have high ________ concentration

Answer 16

hydrogen ion

Question 17

released a hydrogen ion when it dissolves in water

Answer 17

acid

Question 18

acids have a pH of less than ___

Answer 18

7

Question 19

removes hydrogen from a solution

Answer 19

base

Question 20

base has a ____ hydrogen ion concentration

Answer 20

low

Question 21

bases have a pH high than ___

Answer 21

7

Question 22

the increase of power for a base is by ______x

Answer 22

10x

Question 23

neutral solutions have a pH of

Answer 23

7