Module 1 Unit 3 Assignment C

Module 1 Unit 3 Assignment C - The space occupied would be...

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MODULE 1 UNIT 3 Assignment Part C 1. If atoms are constituted mostly of empty space, why doesn’t your chair go through the floor? Because of the charge carried in the electrons. Electrons are carried in both your chair and your floor. Even though electrons are very light, they carry a negative charge. When your chair touches the floor the negative charge in the chair is repelled by the negative charge in the electrons contained in the floor. 2 marks 2. If in your chair all the nuclei were separated from their atoms and put in a box, approximately how much space would they occupy? What would be the nuclei’s mass in relation to the chair’s mass? Why?
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Unformatted text preview: The space occupied would be vastly less (most of an atom is empty space). However the mass of this would be a very substantial portion of the total mass of the chair because most of the mass of an atom is in its nuclei. 2 marks 3. In atoms, what changes during a chemical reaction? The electron configuration of an atom. 2 marks 4. How many electrons occupy the valence shell of an atom of each of the following elements: a) Bromine 7 b) Germanium 4 c) barium 2 3 marks Total 9 marks Submission Instructions Submit your assignment using the drop box on the Assignment page for this unit....
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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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