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11 HWChpt3 - 6 List three examples of each of the following...

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Module1 The Chemical Earth Yr 11 Homework Answer the following questions from Chemistry Contexts 1 pp29 - 41 Chapter 3. Elements of the Earth 1. List four different forms in which the element oxygen may be found on earth. 2. Account for the difference in the abundance of iron in the lithosphere earth’s crust compared with the entire planet. 3. Explain the differences between a hydrogen atom and a hydrogen molecule. 4. Write the correct formula to represent each of the following elements: a) Carbon b) Iron c) Bromine d) Fluorine e) Copper f) Silicon. 5. Describe with examples, how the reactivity of different elements is related to their occurrence in nature as an element or as compounds.
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Unformatted text preview: 6. List three examples of each of the following: a) reactive metal b) reactive non-metal c) non-reactive metal d) non-reactive non-metal 7. Identify the six physical properties of typical metals. 8. From table 3.4, page 38 decided which physical property best identifies an element as a metal. Justify your answer. 9. From the periodic table classify the following as a metal, non-metal or semi-metal: a) Lithium b) Zinc c) Selenium d) Bromine e) Antimony f) Xeon 10. Explain why the location of the semi metals on the periodic table is appropriate....
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