3.1 & 3.2

Question 1

what is oxidation

Answer 1

loss of electrons
- removal of hydrogen addition of oxygen

Question 2

what is reduction

Answer 2

gain of electrons
- addition of hydrogen removal of oxygen

Question 3

define oxidizing agent

Answer 3

a species that oxidises another species by removing an electron, when it reacts it’s reduced

Question 4

define reducing agent

Answer 4

a species that reduces another species by adding an electron, when it reacts it’s oxidized

Question 5

what is an oxidation number

Answer 5

the charge that an ion has or would have if it were fully ionic

Question 6

what is the oxidation number of an uncombind element

Answer 6

0

Question 7

are the more electronegative elements are always given the + or - oxidation number

Answer 7

negative

Question 8

what is the oxidation number of fluorine

Answer 8

-1

Question 9

hydrogen always has an oxidation number of +1 except…

Answer 9

with a less electronegative element

Question 10

oxygen always has an oxidation number of -2 except….

Answer 10

in peroxides (H2O2) or when with fluorine

Question 11

define disproportionation

Answer 11

simultaneous oxidation and reduction of the same element in a single reaction

Question 12

what is a systematic name

Answer 12

when an element has more than one oxidation stare, it’s oxidation in roman numerals is put next to it in the name of the compound