Question

Match the columns with A and B

A) 1. Hydrogen lost
2. Corrosion of iron
3. Cu(II)o
4. Oxygen gain


B) a) black substance
b) reduction
c) oxidation
d) brown flaky substance
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Answer 1

1)HYDROGEN LOST-REDUCTION

2)CORROSION OF IRON-BROWN FLAKY SUBSTANCE

3)CU(2) OXIDE-BLACK SUBSTANCE

Answer 2

Answer:

1.loss of electrons - oxidation

2. corrosion of iron - brown flaky substance

3.Cu(II)o - black substance

4.gain of electrons - reduction