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2 marksAtomic Structure and the Periodic Table

CAPE Chemistry Unit 1 · 2011 · Paper 2 · Question 1(a)(ii)

John Dalton proposed an atomic theory in 1803.

Identify TWO of Dalton's postulates which were proven invalid by modern atomic theory.

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Other parts of this question

  1. 1(a)(i)List FOUR postulates of Dalton's atomic theory.[4 marks]
  2. 1(b)(i)List TWO chemicals and ONE piece of apparatus that the student may use to carry out the investigation.[3 marks]
  3. 1(b)(ii)Describe ONE physical change that the student may have observed.[1 mark]
  4. 1(b)(iii)Identify the reducing agent in the experiment.[1 mark]
  5. 1(b)(iv)Write relevant half equations to illustrate the chemical changes that occur with EACH element.[2 marks]
  6. 1(b)(v)From the half equations in (iv), deduce a balanced equation for the redox reaction.[2 marks]

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