Chapter 1 Exam

Question 1

Find # of Neutrons

Answer 1

Atomic#-Mass#

Question 2

Atomic # Give the # of what? Represented by the Variable (Z)

Answer 2

Protons!

Question 3

Mass # (A)

Answer 3

Total # of Protons and Neutrons in an atom

Question 4

The number of Protons is equivalent to?

Answer 4

The Number of Electrons

Question 5

Isotopes

Answer 5

Atoms w/ identical atomic numbers but different mass numbers

Ex.
Cl-35 & Cl-37

Question 6

Atomic Weight

Answer 6

Found by calculating the % of the Mass contributed by each isotope.

[(Isotope abundance) x (Isotope Mass)]

Ex. 75.77% Cl-35 atoms (mass = 34.97 amu) and 24.23% Cl-37 atoms (mass = 36.97 amu)

(0.7577)(34.97amu)+ (0.2423)(36.97) =

Atomic weight = 35.45 amu

Question 7

Three Major Classes of Elements

Answer 7

Metals, Nonmetals, Metalloids

Question 8

Positively Charged Ion

Answer 8

Cation

Question 9

Ion

Answer 9

Ability to lose or gain an electron, has a charge.

Question 10

Metals form Cations by…

Answer 10

Losing one or more electrons

Question 11

Reactive Nonmetals form anions by…

Answer 11

Gaining one or more electrons to achieve a noble gas configuration.

Question 12

Cr2+

Answer 12

Chromium (2)

Question 13

Copper+

Answer 13

Copper (1)

Question 14

Copper2+

Answer 14

Copper(2) roman numeral

Question 15

Iron2+

Answer 15

Iron(2) Roman numeral

Question 16

Iron3+

Answer 16

Iron(3) Roman numeral

Question 17

H3O+

Answer 17

Hydronium Ion

Question 18

Ammonium ion

Answer 18

Nh4+

Question 19

Acetate ion

Answer 19

CH3CO2-

Question 20

(CO3)2-

Answer 20

Carbonate

Question 21

(HCO3)-

Answer 21

Hydrogen Carbonate Ion

bicarbonate ion

Question 22

Chromate Ion

Answer 22

(CrO4)2-

Question 23

Dichromate

Answer 23

(Cr2O7)2-

Question 24

Cyanide ion

Answer 24

CN-

Question 25

OH-

Answer 25

Hydroxide

Question 26

Hypochlorite

Answer 26

OCl-

Question 27

Nitrate ion

Answer 27

(No3)-

Question 28

Nitrite ion

Answer 28

(NO2)-

Question 29

Oxalate Ion

Answer 29

(C2O4)2-

Question 30

Permanganate ion

Answer 30

(MnO4)-

Question 31

(PO4)3-

Answer 31

Phosphate ion

Question 32

Hydrogen Phosphate ion | biphosphate ion

Answer 32

(HPO4)2-

Question 33

Dihydrogen Phosphate ion

Answer 33

(H2PO4)-

Question 34

Sulfate ion

Answer 34

(SO4)2-

Question 35

Hydrogen Sulfate ion | Bisulfate ion

Answer 35

(HSO4)-

Question 36

Sulfite Watch the ending, this is different from Sulfate ion!!!✋Hint--> Not (SO4)2-

Answer 36

(SO3)2-

Question 37

Br-

Answer 37

Bromine

Question 38

Chlorine

Answer 38

Cl-

Question 39

Fluorine

Answer 39

Fl-

Question 40

Iodine

Answer 40

I-

Question 41

Oxygen (Oxide ion)

Answer 41

O2-

Question 42

Sulfur (Sulfide ion)

Answer 42

S2-

Question 43

Measure of heat

Answer 43

Q= mxcx change in Temp Change in temp = tf-ti Negative number Is Okay, means heat is being released, answer must be in Joules!

Question 44

D=m/v

Answer 44

Density

Question 45

Mass

Answer 45

Density x Vol

Question 46

Volume

Answer 46

M/D

Question 47

Kelvin

Answer 47

C*+237.15

Question 48

Fahrenheit

Answer 48

1.8*C+32

Question 49

Celsius

Answer 49

F-32/1.8

Question 50

Columns are called..

Answer 50

Group/Family

Question 51

Rows are called...

Answer 51

Periods, which run Horizontally

Question 52

Cation is Always ____than the Neutral atom it derived from.

Answer 52

Smaller, since it is a positive charge and therefore loses one or more electron(s)

Question 53

Anion is Always ____than the Neutral atom it derived from

Answer 53

Larger, since it gains electrons. Its negative charge symbolizes it has take another electron(s)

Question 54

Which period is closer to the nucleus, Period 1 or 7?

Answer 54

#1 is closer to the nucleus, which makes it harder to remove an electron. #7 is further and easier to remove electrons

Question 55

Two types of chemical bonds

Answer 55

Ionic and Molecular

Question 56

1 Atom Equals

Answer 56

1.672622x 10' -24