Module 1 Unit 3 Assignment B

Module 1 Unit 3 Assignment B - MODULE 1 UNIT 3 Assignment...

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MODULE 1 UNIT 3 Assignment Part B 1. Which statement of Dalton’s atomic model explains the law of the conservation of mass? Point 4 – Atoms can be neither created nor destroyed while undergoing a physical or chemical change. 2 marks 2. Suspend a comb by a string, teeth downwards. Rub the comb vigorously to accumulate a negative charge. Describe the phenomena that occurs in each of the following situations, and explain why they occur . a) Bring a piece of paper that contains a positive charge close to the extremity of the comb. Move towards each other because opposite charges attract. b) Bring a piece of plastic that contains a negative charge close to the extremity of the comb. Move away from each other as similar charges repel. 4 marks 3. Mention two aspects by which Thomson’s model and Rutherford’s model are similar. 1) Both models support that all matter is made up of minute particles (atoms) 2) and these atoms contained smaller charged particles within them (positive and negative charges). 2 marks
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This note was uploaded on 06/14/2011 for the course CHEM 1 taught by Professor Bielecka during the Spring '11 term at Georgian.

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Module 1 Unit 3 Assignment B - MODULE 1 UNIT 3 Assignment...

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