redox

Question 1

what is meant by the term oxidation

Answer 1

the loss of electrons

Question 2

what is meant by the term reduction

Answer 2

the gain of electrons

Question 3

what is an oxidation number

Answer 3

a number that gives the oxidation state of an element or ionic substance.

Question 4

what is the oxidation number of an element

Answer 4

0

Question 5

what is the overall oxidation number of a neutral compound

Answer 5

0

Question 6

what do the oxidation numbers in a charged compound add up to

Answer 6

the total charge

Question 7

what is hydrogens oxidation number

Answer 7

+1

Question 8

what is oxygens oxidation number

Answer 8

-2

Question 9

what is the oxidation number of all halogens

Answer 9

-1

Question 10

what is the oxidation number of all group 1 metals

Answer 10

+1

Question 11

what is the oxidation number of all group 2 metals

Answer 11

+2

Question 12

what is oxygens oxidation number in a peroxide

Answer 12

-1

Question 13

what is hydrogen’s oxidation number in a metal hydride

Answer 13

-1

Question 14

what does a roman numeral after an element show

Answer 14

the elements oxidation number

Question 15

where are electrons held

Answer 15

in orbitals

Question 16

what are elements in the periodic table arranged by

Answer 16

proton number and orbital

Question 17

what is an oxidising agent

Answer 17

an element that is reduced. an increase in oxidation number

Question 18

what is a reducing agent

Answer 18

an element that is oxidises. a decrease in oxidation number

Question 19

what is a redox reaction

Answer 19

a reaction where oxidation and reduction occurs simultaneously

Question 20

what is a disproportionation reaction

Answer 20

a reaction where the same species if both oxidised and reduces

Question 21

what is a half equation used for

Answer 21

to show the separate oxidation and reduction reaction that occur