### Question 1.3

Give the correct terminology for each of the following definitions/descriptions. Write the answer next to the question number in your answer book.

1.3.1 A horizon of oxidized iron that develops in the subsoil.
1.3.2 The science of taking care of domestic animals that are used as food or product sources.
1.3.3 A chemical reaction in which oxygen is gained or hydrogen is lost.

(2 x 3)

### Question 1.4

Change the UNDERLINED WORD(S) in each of the following statements to make them TRUE. Write only the answer next to the question number in the ANSWER BOOK.

1.4.1 Gross domestic income is the total value of all goods and services produced by a country in a year.
1.4.2 The angle of the aspect can be either gradual or steep and affects the way water runs off.

(6)



Answer :

Final answer:

Oxidation involves the loss of electrons, oxygen gain, or hydrogen loss, while reduction involves gain of electrons, oxygen loss, or hydrogen gain, affecting iron in reactions.


Explanation:

Oxidation is the process where a substance loses electrons, gains oxygen, or loses hydrogen. Reduction is the process where a substance gains electrons, loses oxygen, or gains hydrogen.

  1. Oxidation reaction: Fe → Fe2+ (Iron is oxidized)
  2. Reduction reaction: Fe3+ → Fe2+ (Iron is reduced)

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