CAPE Chemistry Unit 1 · 2016 · Paper 2 · Question 1(a)(i)
John Dalton proposed the atomic theory in 1803.
State THREE postulates of Dalton's atomic theory.
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- 1(a)(ii)Later developments in science led to the modification of the atomic theory. Explain the modification of ONE of the postulates.[2 marks]
- 1(b)(i)Identify the ion responsible for the green colour.[1 mark]
- 1(b)(ii)Given that the sulfate(IV) ion, SO₃²⁻, is converted to the sulfate(VI) ion, SO₄²⁻, in the presence of water, deduce the balanced equation for the redox…[4 marks]
- 1(b)(iii)Identify the oxidizing agent in (b) (ii).[1 mark]
- 1(c)Complete the table by inserting the missing observations or inferences.[5 marks]
More practice: the rest of this paper · more Atomic Structure and the Periodic Table questions · all CAPE Chemistry Unit 1 past papers