U1 - Redox

Question 1

reduction is _____?

Answer 1

the gain of electrons by a reactant in any reaction

Question 2

oxidation is _____?

Answer 2

the loss of electrons by a reactant in any reaction

Question 3

what is an oxidising agent?

Answer 3

a substance which accepts electrons

Question 4

what is a reducing agent?

Answer 4

a substance which donates electrons

Question 5

elements with low electronegativities ______?

Answer 5

tend to form ions by losing electrons and so act as reducing agents

Question 6

elements with high electronegativities ______?

Answer 6

tend to form ions by gaining electrons and so act as oxidising agents

Question 7

the strongest reducing agents are in group _?

Answer 7

1

Question 8

the strongest oxidising agents are in group _?

Answer 8

7

Question 9

give three uses of oxidising agents

Answer 9

kill fungi and bacteria, inactivate viruses, “bleach” for clothes and hair

Question 10

the electrochemical series represent _____?

Answer 10

a series of reduction reactions