CAPE Chemistry Unit 1 · 2011 · Paper 2 · Question 1(a)(i)
John Dalton proposed an atomic theory in 1803.
List FOUR postulates of Dalton's atomic theory.
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Practise this questionOther parts of this question
- 1(a)(ii)Identify TWO of Dalton's postulates which were proven invalid by modern atomic theory.[2 marks]
- 1(b)(i)List TWO chemicals and ONE piece of apparatus that the student may use to carry out the investigation.[3 marks]
- 1(b)(ii)Describe ONE physical change that the student may have observed.[1 mark]
- 1(b)(iii)Identify the reducing agent in the experiment.[1 mark]
- 1(b)(iv)Write relevant half equations to illustrate the chemical changes that occur with EACH element.[2 marks]
- 1(b)(v)From the half equations in (iv), deduce a balanced equation for the redox reaction.[2 marks]
More practice: the rest of this paper · more Atomic Structure and the Periodic Table questions · all CAPE Chemistry Unit 1 past papers