Exam 1

Question 1

Molecules

Answer 1

nonmetal elements that bond

Question 2

Ionic

Answer 2

metal +nonmetal that bond NH4 is a metal when at the beginning

Question 3

Chemical change

Answer 3

you make a new chemical (EX acid plus base)

Question 4

physical change

Answer 4

Nothing chemically changes (EX: heat)

Question 5

INTensive property

Answer 5

INDependent of sample size

Question 6

EXTensive property

Answer 6

More stuff EXTends the property. bigger sample size changes property

Question 7

Chromatography

Answer 7

seperating inks SEPERATES BASED ON POLARITY.

Question 8

distillation

Answer 8

boiling methanol SEPERATE TWO LIQUIDS VIA BOILING POINT

Question 9

filtration

Answer 9

coffee filter SOLID FROM LIQUID

Question 10

kinetic energy

Answer 10

energy of motion (temp)

Question 11

Potential energy

Answer 11

ability to store energy that can become kinetic energy (heat)

Question 12

volumetric glassware

Answer 12

very accurate/ calibrated glassware ex graduated cylinder.

Question 13

Density equation

Answer 13

D = Mass g/volume mL

Question 14

1 mL = 1 ???

Answer 14

cm^3

Question 15

1.0 + 1.2298887 in sig figs

Answer 15

2.2

Question 16

(1.0 +1.0085749)/ 2.000989 in sig figs

Answer 16

1

Question 17

JJ Thompsom Cathode Ray

Answer 17

showed that there were charged particles comming out of atoms (electrons)

Question 18

Millikan’s Oil drop

Answer 18

found out what charge were for electrons via the rate that the drops fell

Question 19

Rutherfords gold foil

Answer 19

shot alpha particles through gold foil and showed that solids weren’t really that solid (most fly through). Proved existence of nucleus

Question 20

Rutherford’s atom model

Answer 20

had a nucleus and a charged space around it filled with electrons.

Question 21

JJ Thomson’s model

Answer 21

plum pudding model, basically soup of charges.

Question 22

mass spectrometer

Answer 22

shows how heavy things are using magnets (counts up atoms)

Question 23

molecular formula

Answer 23

ACTUAL amount of atoms in molecule

Question 24

empirical formula

Answer 24

RATIO of atoms in molecule

Question 25

7 Diatomic molecules

Answer 25

H2, N2, O2, F2, Cl2, Br2, I2, NOTE NOT FOR ELEMENTAL

Question 26

Eth-

Answer 26

2 carbons

Question 26

Meth-

Answer 26

1 carbon

Question 27

Prop-

Answer 27

3 carbons

Question 28

But-

Answer 28

4 carbons

Question 29

cyclo-

Answer 29

all carbons bounded in a circle

Question 30

OH functional group

Answer 30

Alchohol, adds -ol ex: methane to methanol

Question 31

combustion rxn

Answer 31

Fuel + 02 = CO2 + H2O

Question 32

avogandros number

Answer 32

6.022 x 10^23 amu

Question 33

empirical formula from mass percent

Answer 33

percentage x mass / atomic mass/ smallest amount of moles =empirical formula

Question 34

percent yield

Answer 34

actual yield/ theoretical yield x 100

Question 35

scaleen factor

Answer 35

gets from empirical to molecular

Question 36

Metric system is GI-ME-KI or GMK

Answer 36

10^9 10^6 10^3

Question 37

deci (d)

Answer 37

10^-1

Question 38

Centi (c)

Answer 38

10^-2

Question 39

Milli (m)

Answer 39

10^-3

Question 40

Micro (u?)

Answer 40

10^-6

Question 41

Nano (n)

Answer 41

10^-9

Question 42

Pico (p)

Answer 42

10^-12

Question 43

Femto (f)

Answer 43

10^-15

Question 44

how many times must we convert m^3 to cm^3?

Answer 44

3

Question 45

Kinetic energy equation

Answer 45

KE = 1/2 mv^2

Question 46

Discrete element

Answer 46

Diatomic element thing H2

Question 47

ite replaced with _____ in acids

Answer 47

ous

Question 48

ate replaced with ____ in acids

Answer 48

ic

Question 49

5 carbons

Answer 49

penta

Question 50

6 carbons

Answer 50

Hexa

Question 51

7 carbons

Answer 51

hepta

Question 52

8 carbons

Answer 52

octa

Question 53

9 carbons

Answer 53

nona

Question 54

10 carbons

Answer 54

deca

Question 55

formula units

Answer 55

amu's

Question 56

isomers

Answer 56

molecules with the same molecular formula, but different structural appearances.

Question 57

PO4 name and charge

Answer 57

phosphate 3-

Question 58

C2O4 name and charge

Answer 58

Oxalate 2-

Question 59

CO3 name and charge

Answer 59

Carbonate 2-

Question 60

Dichromate formula and charge

Answer 60

C2O7 2-

Question 61

SO4 name and charge

Answer 61

Sulfate 2-

Question 62

SO3 name and charge

Answer 62

Sulfite 2-

Question 63

IMP for mass spectrometer questions....

Answer 63

Remember diatomics or discrete elements