redox reactions

Question 1

reduction (in terms of electrons)

Answer 1

gain of electrons

Question 2

oxidation (in terms of electrons)

Answer 2

loss of electrons

Question 3

REDOX

Answer 3

reduction and oxidation happen at the same time

Question 4

what type of reaction is metals with acids?

Answer 4

redox

Question 5

write the half equations for iron and sulfuric acid

Answer 5

Fe -> Fe²⁺ + 2e⁻
2H⁺ + 2e⁻ -> H₂

Question 6

which atoms lose and gain electrons in iron and sulfuric acid reaction?

Answer 6

iron atoms lose electrons to become iron ions-oxidised by hydrogen ions
hydrogen ions gain electrons to become hydrogen atoms-reduced by iron atoms

Question 7

ionic equation iron and sulfuric acid

Answer 7

Fe + 2H⁺ -> Fe²⁺ + H₂

Question 8

what other reactions are redox

Answer 8

displacement

Question 9

displacement

Answer 9

a more reactive element displaces a less reactive element

Question 10

which metal is reduced in a displacement reaction?

Answer 10

the metal ion

Question 11

which metal is oxidised in a displacement reaction?

Answer 11

the metal atom