What are transferred in an oxidation-reduction reaction?

the answer is electrons

Explanation:

the answer of electrochemistry unit test

1)electrons

2)calcium

3)oxidation

4) Na

5)+1

6)N = -3, H = +1, Cl = -1

7) Cr

8) Mercury

9) Zn(s)

10)Two half-reaction must be physically separated.

11) anode only

12) the moving electrons

13) graphite

14) a direct current

15) O diffuses through cathode

16) electrolysis

17)all the above

18) hydrogen gas and oxygen gas

19) decomposition of metal layer on a material

this would be a math

d. groundwater flows through the subsoil and deposits minerals.