genchem

Question 1

4 phases of matter

Answer 1

solid
liquid
gas
plasma (lightning or TV screen)

Question 2

mass

Answer 2

the amount of matter contained in an object, NOT WEIGHT

Question 3

Law of Conservation of Matter

Answer 3

matter cannot be created or destroyed, physical or chemical changes can occur but the total amount of matter stays the same

Question 4

element vs compound

Answer 4

element - pure in the sense that it is exclusively one thing

compound - can be further broken down, like metal oxides

Question 5

two types of mixtures

Answer 5

heterogeneous (trail mix)
homogenius - solution, fully mixed together

Question 6

physical property

Answer 6

not associated with chemical composition change

like density, color, hardness

NO CHEMICAL IDENTITY

Question 7

chemical property

Answer 7

change in chemical composition

flammability, acidity, reactivity

Question 8

intensive vs extensive properties

Answer 8

extensive - depends on amount (mass or volume)

intensive - same regardless of amount (temp, color, density)

Question 9

7 SI units

Answer 9

My kind sister Amy keeps many coins

meter
kg
second
amp (electric current)
kelvin (temp)
mole
candela (light density)

Question 10

rounding rule when adding

Answer 10

keep the least amount of decimal places from question

Question 11

rounding rule when multiplying

Answer 11

round to least number of sig fig

Question 12

K=

Answer 12

C+273.15

Question 13

Radioactivity of proton, neutron and electron

Answer 13

proton is alpha
electron is beta
gamma is neutron

Question 14

the electron is ____ than proton and neutrons

Answer 14

LIGHTER

Question 15

Structural atom facts

Answer 15

atom is mostly composed of empty space

middle (nucleus) is composed of protons and neutrons

electrons surround it orbiting

Question 16

periodic table horizontal

Answer 16

period

Question 17

periodic table vertical

Answer 17

group

Question 18

Covalent bonding

Answer 18

(H2O) two or more atoms share electrons

Question 19

ionic bonding

Answer 19

formed when two atoms, one of which is a metal, interact and exchange electrons

Has a positive and negative ion
NaCl

Question 20

naming covalent bonds

Answer 20

uses prefixes (mono, di, tri) no suffixes

Question 21

naming ionic compounds

Answer 21

uses suffixes (like orgo)

Question 22

NH4+

Answer 22

ammonium

Question 23

ammonium

Answer 23

NH4+

Question 24

phosphate

Answer 24

PO4 3-

Question 25

PO4 3-

Answer 25

posphate

Question 26

phosphite

Answer 26

PO3 3-

Question 27

PO3 3-

Answer 27

phosphite

Question 28

AsO4 4-

Answer 28

arsenate

Question 29

AsO3 3-

Answer 29

arsonite

Question 30

arsenite

Answer 30

AsO3 3-

Question 31

arsenate

Answer 31

AsO4 4-

Question 32

O2 2-

Answer 32

peroxide

Question 33

peroxide

Answer 33

O2 2-

Question 35

sulfate

Answer 35

SO4 2-

Question 36

sulfite dont need to know

Answer 36

SO3 2-

Question 37

carbonate

Answer 37

CO3 2-

Question 38

hydrogen phosphate

Answer 38

HPO4 2-

Question 39

SO4 2-

Answer 39

sulfate

Question 40

SO3 2-

Answer 40

sulfite

Question 41

CO3 2-

Answer 41

carbonate

Question 42

HPO4 2-

Answer 42

hydrogen phosphate

Question 43

ClO-

Answer 43

hypochlorite

Question 44

ClO2 -

Answer 44

chlorite

Question 45

ClO3 -

Answer 45

chlorate

Question 46

ClO4 -

Answer 46

perchlorate

Question 47

HSO4 -

Answer 47

hydrogen sulfate

Question 48

H2PO4 -

Answer 48

dihydrogen phosphate

Question 49

NO3-

Answer 49

nitrate

Question 50

NO2-

Answer 50

nitrite

Question 51

hydrogen sulfate

Answer 51

HSO4 -

Question 52

divydrogen phosphate

Answer 52

H2PO4 -

Question 53

nitrate

Answer 53

NO3-

Question 54

nitrite

Answer 54

NO2-

Question 55

HCO3-

Answer 55

hydrogen carbonate

Question 56

hydrogen carbonate

Answer 56

HCO3-

Question 57

acetate

Answer 57

CH3CHOO

Question 58

cyanide

Answer 58

CN-

Question 59

hydroxide

Answer 59

OH-

Question 60

permanganate

Answer 60

MnO4-

Question 61

thiocyanate

Answer 61

SCN-

Question 62

Molarity formula

Answer 62

M=(moles/volume in L)

Question 63

dilution

Answer 63

M1V1=M2V2

Question 64

concentration formula

Answer 64

conc=n/v

Question 65

empirical vs molecular formula

Answer 65

empirical is fully reduced, molecular is the actual

Question 66

alkali

Answer 66

group all the way left *H not included

Question 67

alkaline earth

Answer 67

1 group off the left

Question 68

transition

Answer 68

all middle

Question 69

metalloids

Answer 69

Al, germinuium down

Question 70

nonmetals

Answer 70

boron, silicone zig zag down

Question 71

halogens

Answer 71

1 group off the right

Question 72

noble gasses

Answer 72

all the way right

Question 73

group

Answer 73

up down

Question 74

period

Answer 74

left right

Question 75

mass =

Answer 75

atomic mass (aka protons) + neutrons

Question 76

daltons theory

Answer 76

all matter is made by atoms compounds = 2+ atoms chemical reaction is 2+ atoms rearranged all atoms of a given element have the same mass and properties - which are exclusive to only that element

Question 77

thomsons theory

Answer 77

plum pudding model discovered charge to mass ratio negative is dispersed through the positive atom

Question 78

millikans theory

Answer 78

charge of electrons was -, led to discovery of mass of electron

Question 79

Rutherfords theory

Answer 79

gold foil exp discovered that the atom is mostly empty with a dense positive core, negative is orbiting around