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3 marksAcidic and Basic Character of Organic Compounds

CAPE Chemistry Unit 2 · January 2021 · Paper 2 · Question 4(c)(i)

The following observations were made by some students in a Home Economics class. Observation 1: Cucumber slices release water when salt is added to them. Observation 2: Peas swell when soaked in water.

Explain the chemical process that can account for these observations.

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Other parts of this question

  1. 4(a)(i)Complete Table 3 which shows the three subatomic particles and their properties.[4 marks]
  2. 4(a)(ii)Draw a labelled diagram to illustrate the location, arrangement and number of EACH type of subatomic particle in Element ²⁹₁₄A.[5 marks]
  3. 4(b)Calculate the number of atoms in 80.0 g of calcium. [Relative atomic mass of Ca = 40; Avogadro's constant 6.0 × 10²³][2 marks]
  4. 4(c)(ii)State ONE other example that demonstrates this process.[1 mark]

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