final for chemistry

Question 1

always change the temperature to

Answer 1

Celcius to Kelvins (273.15)

Question 2

water specific heat

Answer 2

4184 j/kg * C

Question 3

half life

Answer 3

grams (1/2)^t/T

Question 4

molarity

Answer 4

mole solute/liters solute

Question 5

diluted equation

Answer 5

M1V1=M2V2

Question 6

percent by mass of molarity

Answer 6

grams solute/grams solution *100

Question 7

boyle’s law

Answer 7

P1V1=P2V2

Question 8

charles’ law

Answer 8

V1/T1=V2/T2

Question 9

gay’s law

Answer 9

P1/T1=P2/T2

Question 10

combined’s law

Answer 10

P1V1/T1=P2V2/T2

Question 11

ideal gas law

Answer 11

PV=nRT (0.0821)

Question 12

percent mass of element in compound

Answer 12

mass of element/mass of whole compound *100

Question 13

synthesis

Answer 13

A+B = AB

Question 14

decomposition

Answer 14

AB = A + B

Question 15

single displacement (metal)

Answer 15

A + BC = B + AC

Question 16

single displacement (nonmetal)

Answer 16

A + BC = C + BA

Question 17

double displacement

Answer 17

AB + CD = AD + CB

Question 18

names for numbers prefix

Answer 18

mono, di, tri, tetra, penta, hexa, hepta, octa, Nona, deca

Question 19

density

Answer 19

mass * volume

Question 20

atomic # is equal to

Answer 20

number of protons and electrons

Question 21

mass # is equal to

Answer 21

number of protons + number of neutrons

Question 22

real gases become ideal when

Answer 22

high temperatures and low pressure

Question 23

numbers to remember for measurements

Answer 23

760 torr
760 mm Hg
14.7 psi
101325 Pa
101.325 KPa

Question 24

boiling point

Answer 24

100 C

Question 25

melting point

Answer 25

0 C

Question 26

grams and moles can

Answer 26

convert into each other

grams cannot convert to molecules

Question 27

moles and molecules can

Answer 27

convert into each other
(6.022 * 10^23)

Question 28

nonpolar

Answer 28

equal
0 to 0.4

Question 29

polar

Answer 29

uneven
0.4 to 2.0

Question 30

109.5

Answer 30

4 electron group
sp^3

Question 31

120

Answer 31

3 electron group (curving)
sp^2

Question 32

180

Answer 32

2 electron group (straight)
sp

Question 33

4 electron group

Answer 33

tetrahedral/pyramidal/bent

Question 34

3 electron group

Answer 34

trigonal planar/bent

Question 35

2 electron group

Answer 35

linear

Question 36

yield percentage

Answer 36

actual yield/theoretical yield *100

Question 37

heat conversions

Answer 37

Q= mcT
Q= nHfus
Q= nHvap

Question 38

special decompositions (CO3 and ClO3)

Answer 38

CaCO3 = CO2 + CaO
2Al(ClO3)2 = 2ACl3 + 9O2

Question 39

atomic radius

Answer 39

gets bigger when going down and left

Question 40

electronegativity

Answer 40

gets higher when going up and right (not including noble gases)

Question 41

electron affinity

Answer 41

gets higher when going up and right (not including noble gases)

Question 42

ionization energy

Answer 42

gets higher when going up and right

Question 43

electron configruation

Answer 43

s2, p6, d10, f14

Question 44

when rounding, but the number will not be to the place needed (it goes higher instead) then…

Answer 44

use exponential form

ex) round 897 to tens place

a) 9.0 * 10^2

Question 45

london dispersion force

Answer 45

2 asymmetrical (weak

Question 46

hydrogen bond

Answer 46

N-H, O-H, F-H, (strongest)

Question 47

dipole dipole

Answer 47

polar molecules (medium strength)

Question 48

derived units

Answer 48

amount, length, mass, time, electric current, temperature, light intensity

Question 49

VSEPR

Answer 49

Valence Shell Electron Pair Repulsion