Theme 2

Question 1

What is mechanical production of energy from chemical combustion?

Answer 1

The kinetic energy from steam/wind/rivers allows for the generation of energy via rotation of a magnet inside a coil of wires

Question 2

What is electrochemical energy production?

Answer 2

Electrons move from one species to another, and if we separate them we can harness the energy

Question 3

What renewable energy source can replace all of earth’s energy sources?

Answer 3

The suns solar energy.

Question 4

What is the Keeling Curve?

Answer 4

Professor Keeling wanted to see the atmospheric concentration of CO2, and noticed there was an annual cycle relating to plants cycles. Even with annual cycle, there is a gradual increase of ppm of CO2 every year.

Question 5

Reactant

Answer 5

left side of a chemical equation

Question 6

Products

Answer 6

right side of a chemical equation

Question 7

Arrow in chemical reaction equation

Answer 7

connects reactants to products, and shows that the reactants shown become the indicated products

Question 8

Phase: solid

Answer 8

(s)

Question 9

Phase: liquid

Answer 9

(l)

Question 10

Phase: gas

Answer 10

(g)

Question 11

Phase (aqueous)

Answer 11

(aq)

Question 12

Define aqueous

Answer 12

containing water, as a solvent or medium

Question 13

What is the law of conservation of mass?

Answer 13

Since we cannot create or destroy atoms, and things just change form, we have to balance our equations so there is equal mass on both sides of the reaction.

Question 14

sulfate

Answer 14

SO4 2-

Question 15

phosphate

Answer 15

PO4 3-

Question 16

hydroxide

Answer 16

OH-

Question 17

carbonate

Answer 17

CO3 2-

Question 18

nitrate

Answer 18

NO3 -

Question 19

The oxidation state of an element in its elemental form is

Answer 19

0

elemental can be polyatomic too, still 0

Question 20

The oxidation state of an atom that exists as a monoatomic ion is

Answer 20

the charge of that ion

ex) Mg2+ has an O.S. of +2

Question 21

The oxidation state of oxygen in a compound with two or more elements is

Answer 21

-2

Question 22

The oxidation state of hydrogen in a compound with two or more elements that are nonmetals is

Answer 22

+1

ex) HCl,

Question 23

The oxidation state of hydrogen in a compound with two or more elements that are metals is

Answer 23

• 1

ex) NaH

Question 24

Fluorine has an oxidation state of

Answer 24

-1

Question 25

Halogens in a multi-element compound generally have an oxidation state of

Answer 25

- 1 | exceptions: halogens with fluorine or oxygen

Question 26

oxidation

Answer 26

loss of electrons,

Question 27

LEO

Answer 27

loss of electrons is oxidation

Question 28

Reduction

Answer 28

gain of electrons

Question 29

GER

Answer 29

gain of electrons is reduction

Question 30

increase in oxidation state

Answer 30

oxidation

Question 31

reduction in oxidation state

Answer 31

reduction

Question 32

OIL

Answer 32

oxidation is loss (of electrons)

Question 33

RIG

Answer 33

reduction is gain (of electrons)

Question 34

Redox reaction

Answer 34

simultaneous loss and gain of electrons, oxidation- reduction reaction

Question 35

What is an oxidizing agent?

Answer 35

an oxidizing agent is a reactant that accepts electrons from another in a redox reaction thereby oxidizing the other reactant

Question 36

What is a reducing agent?

Answer 36

a reduction agent is a reactant that donates electrons to another in a redox reactant, thereby reducing the other reactant

Question 37

Is the oxidizing agent reduced or oxidized in a reaction

Answer 37

The oxidizing agent is reduced

Question 38

Is the reducing agent reduced or oxidized in a reaction

Answer 38

The reducing agent is oxidized