Extra Notes (Exam 4)

Question 1

What is the first step in balancing redox reactions (in acidic conditions)?

Answer 1

Write the two half equations

Question 2

What is the second step in balancing redox reactions (in acidic conditions)?

Answer 2

Balance all elements EXCEPT O and H

Question 3

What is the third step in balancing redox reactions (in acidic conditions)?

Answer 3

Balance O by adding water

Question 4

What is the fourth step in balancing redox reactions (in acidic conditions)?

Answer 4

Balance hydrogen by adding H+

Question 5

What is the fifth step in balancing redox reactions (in acidic conditions)?

Answer 5

Balance charge by adding electrons (decreases charge)

Question 6

What is the sixth step in balancing redox reactions (in acidic conditions)?

Answer 6

Multiply reactions so electrons are equal between them

Question 7

What is the seventh step in balancing redox reactions (in acidic conditions)?

Answer 7

Combine reactions/cancel out electrons

Question 8

What is the first step in balancing redox reactions (basic conditions)?

Answer 8

Write the two half reactions

Question 9

What is the second step in balancing redox reactions (basic conditions)?

Answer 9

Balance all elements EXCEPT O and H

Question 10

What is the third step in balancing redox reactions (basic conditions)?

Answer 10

Balance O by adding water

Question 11

What is the fourth step in balancing redox reactions (basic conditions)?

Answer 11

Balance hydrogen by adding H+

Question 12

What is the fifth step in balancing redox reactions (basic conditions)?

Answer 12

Balance charge by adding electrons (decreases charge)

Question 13

What is the sixth step in balancing redox reactions (basic conditions)?

Answer 13

Multiply reactions so electrons are equal between them

Question 14

What is the seventh step in balancing redox reactions (basic conditions)?

Answer 14

Combine reactions/cancel things out

Question 15

What is the eighth step in balancing redox reactions (basic conditions)?

Answer 15

Add the same number of OH- to both sides to neutralize H+

Question 16

What is the conversion of one nuclide/atom into another?

Answer 16

Transmulation

Question 17

What is the decomposition of some sort of molecule?

Answer 17

Nuclear fission

Question 18

What is the combination of very light nuclei—-converts mass into large amounts of energy?

Answer 18

Nuclear fusion

Question 19

Where are transition metals found?

Answer 19

d-block and f-block

Question 20

What forms coordinate covalent bonds?

Answer 20

Transition metals

Question 21

What are the two things that transition metals are made up of?

Answer 21

Lewis acid and Lewis base

Question 22

What is the lewis acid in a transition metal?

Answer 22

• e acceptor
• central atom

Question 23

What is the lewis base in a transition metal?

Answer 23

• e donor
• ligand
• has variety
• has to have one or more electron pairs

Question 24

What does F equal in the equation: G= -n(F)Ecell(standard)

Answer 24

96485

Question 25

Which of the following reactions best described beta decay?

Answer 25

Neutron----proton + emitted electron

Question 26

What is the process when an electron is emitted by an unstable nucleus called?

Answer 26

Beta decay

Question 27

Which has the highest penetrating power?

Answer 27

Gamma

Question 28

Which has the lowest penetrating power?

Answer 28

Alpha

Question 29

For elements 1-20, what is the idea N-to-Z ratio?

Answer 29

1

Question 30

For the elements 20-40, what is the ideal N-to-Z ratio?

Answer 30

1.23

Question 31

For the elements 20-40, what is the ideal N-to-Z ratio?

Answer 31

1.25

Question 32

For the elements 40-80, what is the ideal N-to-Z ratio?

Answer 32

1.5

Question 33

What happens for elements above 83?

Answer 33

There is no stable nuclei

Question 34

What type of decay occurs when N-to-Z ratio is *too high*?

Answer 34

Beta decay

Question 35

What type of decay occurs when N-to-Z ratio is *too low*?

Answer 35

Positron emission and electron capture

Question 36

Which type of decay helps to make heavy nuclei lighter (only decay to change mass)?

Answer 36

Alpha decay

Question 37

What is the number of donor atoms attached?

Answer 37

Coordination number