Chapter 3

Question 1

Potential

Answer 1

stored/postion

Question 2

kinetic

Answer 2

motion

Question 3

thermal

Answer 3

the kinetic energy of molecules

Question 4

tempurature

Answer 4

measurment of thermal energy

Question 5

heat

Answer 5

thermal energy transfer

Question 6

Solid

Answer 6

def shape, def vol, organized @ molecular level, Molecules very close, little movement

Question 7

Liquid

Answer 7

Def vol, no def shape, not organized, molecules are close, moderate shape

Question 8

Gas

Answer 8

no def vol or shape, not organized, molecules are far apart, lots of movement

Question 9

Vaporization

Answer 9

amount of heat to completely vaporize liquid after boiling

Question 10

Heat of fusion

Answer 10

amount of heat to completely melt solids after melting point

Question 11

Chemical Changes

Answer 11

chemical bonds are broken or formed, changes chemical makeup

Question 12

Solution

Answer 12

homogenous mix tiny particles

Question 13

solvent

Answer 13

substance in which something is dissolved

Question 14

solute

Answer 14

thing dissolved in solvent

Question 15

aqueous solution

Answer 15

a solution in which water acts as solvent

Question 16

special properties of water

Answer 16

1.polar
2.cohesive
3.high surface tension
4.high heat capacity
5.high heat of vaporization
6.good solvent
7.ice floats

Question 17

molarity=(M)

Answer 17

mol/L

Question 18

Acid

Answer 18

Provide hydrogen ions in water. strong release ions easily, weak is opposite

Question 19

Base

Answer 19

can accept hydrogen ions in water. strong holds ions tightly, weak opp

Question 20

PH

Answer 20

Logarithmic measure of the concentration of hydrogen ions.

Question 21

PH #

Answer 21

1-14.
less than 7 is acid
more than 7 is base
example PH 14 has 10^-14 hydrogen ions

Question 22

Buffer

Answer 22

Combo of substances that prevent/resist a drastic change in PH. Roughly equal mix of weak acid and its conjugate base