Week 1 Day 2

Question 1

atomic number

Answer 1

number of protons

Question 2

Atomic Mass

Answer 2

number of protons + number of Neutrons

Question 3

isotope

Answer 3

different isotopes of an element have different number of neutrons

this changes the density but not the chemistry

Question 4

valence electrons

Answer 4

electrons in the outer shell

Question 5

Covalent bonds

Answer 5

sharing of electron pairs

*Do not dissolve in H2O

contain only nonmetals

Question 6

Ionic bonds

Answer 6

transfer of valence electrons.

*strong bonds in vacuum, dissolve in H2O

Generally a metal and one or more non-metals

ionic compound charges must equal zero

Question 7

Hydrogen bonds

Answer 7

attraction of the partial positive charges of the H to the partial negative charges of O & N

Question 8

hydrophobic interactions

Answer 8

H2O repulsion of non-polar atoms

Question 9

N₂O

Answer 9

Dinitrogen monoxide

(Nitrous oxide)

Question 10

NO

Answer 10

Nitrogen monoxide

(nitric oxide)

Question 11

SCl₂

Answer 11

Sulfur dichloride

Question 12

P₂O₅

Answer 12

Diphosphorous pentoxide

Question 13

CCl₄

Answer 13

Carbon tetrachloride

Question 14

SiO₂

Answer 14

Silicon dioxide

Question 15

H₂O

Answer 15

Dihydrogen oxide

Question 16

Cu⁺

Answer 16

Copper (I)

Question 17

Cu²⁺

Answer 17

Copper (II)

Question 18

Fe²⁺

Answer 18

Iron (II)

Question 19

NH₄⁺

Answer 19

Ammonium ion

Question 20

H₃O⁺

Answer 20

Hydronium ion

Question 21

HCO₃^-

Answer 21

Bicarbonate ion

Question 22

HSO₄^-

Answer 22

Bisulfate

Question 23

OH^-

Answer 23

Hydroxide ion

Question 24

C₂H₃O₂^-

Answer 24

Acetate ion

Question 25

CN^-

Answer 25

Cyanide ion

Question 26

H₂PO₄^-

Answer 26

Dihydrogenphosphate ion

Question 27

SO₄^2-

Answer 27

Sulfate ion

Question 28

NaCL

Answer 28

Sodium Chloride

Question 29

K₂SO₄

Answer 29

Potassium sulfate

Question 30

NaHCO₃

Answer 30

Sodium bicarbonate

Question 31

FeSO₄

Answer 31

Iron (II) sulfate

Question 32

Fe₂(SO₄)₃

Answer 32

Iron (III) sulfate

Question 33

mole

Answer 33

the amount of material that contains as many particles as 12 g of carbon-12 One mole of material contains 6.02 x 10²³ particles

Question 34

molar mass

Answer 34

(MM) mass in grams of one mole of material Equal to atomic mass of element in grams

Question 35

Molarity

Answer 35

(M)

Question 36

matter

Answer 36

anything that has mas and occupies space

Question 37

atoms

Answer 37

fundamental building blocks of metter composed of electrons, protons, and neutrons

Question 38

ions

Answer 38

atoms or groups of atoms bonded together that have a net electrical charge. Charge is attained by adding or removing electrons cations anions

Question 39

elements

Answer 39

only one kind of atom

Question 40

compounds

Answer 40

more than one kind of atom in a fixed ratio by mass

Question 41

molecules (molecular compounds)

Answer 41

groups of atoms chemically bonded together into a discrete unit by covalent bonds. electrically neutral

Question 42

intensive properties

Answer 42

density, colorless

Question 43

extrinsic

Answer 43

mass, volume

Question 44

phosphate

Answer 44

PO_4^3-

Question 45

carbonate

Answer 45

CO_3^2-

Question 46

NH₃

Answer 46

Ammonia

Question 47

NO_2^-

Answer 47

nitrite

Question 48

SO₃^2-

Answer 48

Sulfite

Question 49

elements in large amounts found in human body

Answer 49

Oxygen Carbon Hydrogen Nitrogen Calcium Phosphorus

Question 50

elements found in trace amounts

Answer 50

Magnesium I Se Mo Fe