Final Exam Concepts

Question 1

Relation of enthalpy of an object and its surroundings?

Answer 1

q one = -q other

Question 2

When does water conduct electricity?

Answer 2

When there are dissolved cations and anions

Question 3

Which acids completely breakdown for net ionic equation?

Answer 3

Strong acids; Hydrochloric (HCL), Nitric (HNO3), Sulfuric (H2SO4)

Question 4

Always soluble?

Answer 4

No3-
NH4+
Group 1 cations

Question 5

Usually soluble?

Answer 5

Br-, Cl-, I- except with Ag Hg Pb

Question 6

Usually insoluble?

Answer 6

S 2-, OH-, CO3 2-, PO4 3-

Question 7

Which is the oxidizing agent?

Answer 7

The one that becomes more negative or less positive (gains electrons)

Question 8

Oxidation number of pure element?

Answer 8

o

Question 9

Oxidation number of O?

Answer 9

-2

Question 10

Oxidation number of F?

Answer 10

-1

Question 11

Oxidation number of H?

Answer 11

+1

Question 12

Oxidation number of Group 1 metals?

Answer 12

+1

Question 13

Oxidation number of Group 2 metals?

Answer 13

+2

Question 14

How to solve half reactions?

Answer 14

Find in the table, balance the electrons

Question 15

What to always check for with molecular equations?

Answer 15

Always check for limiting reagent

Question 16

Avogadro’s number?

Answer 16

6.022 x 10^22 particles/ mol

Question 17

Heterogenous?

Answer 17

Cloudy

Question 18

Homogenous?

Answer 18

Clear

Question 19

Emission dropping to n=1?

Answer 19

UV

Question 20

Emission dropping to n=2?

Answer 20

Visible

Question 21

Emission dropping to n=3?

Answer 21

IR

Question 22

Sizes of atoms/ ions?

Answer 22

Down to left

Question 23

Electronegativity of atoms?

Answer 23

Up to right

Question 24

Diamagnetic?

Answer 24

No half-filled orbitals

Question 25

Paramagnetic?

Answer 25

Half-filled orbital

Question 26

Value on n?

Answer 26

Row on periodic table

Question 27

Value of l?

Answer 27

0 up to n-1

Question 28

Value of ml?

Answer 28

0 +- l

Question 29

Value of ms?

Answer 29

+- 1/2