Redox

Question 1

what is oxidation

Answer 1

the process of electron loss

Question 2

what is reduction

Answer 2

the process of electron gain

Question 3

what is an oxidising agent

Answer 3

cause oxidation but themselves are reduced

Question 4

what is a reducing agent

Answer 4

cause reduction but themselves are oxidised

Question 5

what is the scaffold for making redox equations and half equations

Answer 5

1) construct half equations
2) balance the subject of the half equation
3) balance the oxygens by adding in H2O
4) balance the hydrogens by adding in H+
5) balance the overall charge on each side by adding in e-

SOHC

Question 6

which side will electrons be in for reduction

Answer 6

reactants
RR

Question 7

how do you combine half equations

Answer 7

1) identify number of electrons in each half equation
2) multiply up one/both equations to make the electrons be equal to each other
3) combine both equations and cancel unnecessary compounds

Question 8

what is a spectator ion

Answer 8

an ion present in a reaction but doesn’t change oxidation state as isnt in redox equation