unit 9

Question 1

what is the particle arrangement & movement of a solid

Answer 1

orderly arranged, vibrate in place

Question 2

what is the particle arrangement & movement of a liquid

Answer 2

close together, slide past each other

Question 3

what is the particle arrangement & movement of a gas

Answer 3

far apart, move at high speeds

Question 4

does a solid have a fixed shape

Answer 4

yes

Question 5

does a liquid have a fixed shape

Answer 5

no

Question 6

does a gas have a fixed shape

Answer 6

no

Question 7

does a solid have a fixed volume

Answer 7

yes

Question 8

does a liquid have a fixed volume

Answer 8

yes

Question 9

does a gas have a fixed volume

Answer 9

no

Question 10

what is plasma

Answer 10

an ionized gas

Question 11

arrange the states of matter in order of increasing energy

Answer 11

solid->liquid->gas->plasma

Question 12

what is melting

Answer 12

solid->liquid

Question 13

what is freezing

Answer 13

liquid->solid

Question 14

what is boiling

Answer 14

liquid->gas

Question 15

what is condensing

Answer 15

gas->liquid

Question 16

what is sublimation

Answer 16

solid->gas

Question 17

what is deposition

Answer 17

gas->solid

Question 18

what is the critical point

Answer 18

temperature and pressure at which gas and liquid becomes one phase

Question 19

what are inter molecular forces

Answer 19

the force of attraction between molecules

Question 20

the stronger the imf the higher the what

Answer 20

boiling point

Question 21

imf is weaker than what bonds

Answer 21

covalent and ionic bonds

Question 22

what is london dispersion

Answer 22

weakest imf, caused by motion of electrons, found in all molecules

Question 23

what is dipole dipole

Answer 23

when polar molecules are attracted to each other

Question 24

what is hydrogen bonding

Answer 24

strongest imf, when hydrogen bonds to fluorine, oxygen, or nitrogen

Question 25

what is vapor pressure

Answer 25

pressure of vapor found directly above a liquid in a closed container

Question 26

what is a violate liquid

Answer 26

high vapor pressure, low imf, low boiling point

Question 27

what is a non violate liquid

Answer 27

low vapor pressure, high imf, high boiling point

Question 28

what is heat (q)

Answer 28

energy being transferred between objects that are different temps.

Question 29

what are the units of heat

Answer 29

joules (j) and kilojoules (kj)

Question 30

what stays the same during a phase change

Answer 30

temperature

Question 31

what is the heat of vaporization

Answer 31

the amount of energy needed to convert one mole of a substance between its liquid and gas state

Question 32

what are the units for heat of vaporization

Answer 32

j/mol and kj/mol

Question 33

what is heat of fussion

Answer 33

the amount of energy needed to convert one mole of a substance between its solid and liquid states

Question 34

what are the units for heat of fussion

Answer 34

j/mol and kj/mol

Question 35

what is specific heat

Answer 35

the amount of energy needed to raise 1 gram of a substance to 1 C

Question 36

what are the units for specific heat

Answer 36

j/gC and kj/gC

Question 37

what is the equation for specific heat

Answer 37

q=mcAt

Question 38

what does m=

Answer 38

mas

Question 39

what does c=

Answer 39

specific heat

Question 40

what does AT=

Answer 40

final temp-inital temp

Question 41

what is melting point depression

Answer 41

non volatile substance is dissolved in a liquid, decreasing the melting point of that liquid

Question 42

what is boiling point elevation

Answer 42

non volatile substance is dissolved in a liquid, increasing the boiling point of that liquid