09 S2 Sa2 Rev Ws_ans
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LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
ANSWER KEY Part 1: Elements, Compounds and Mixtures
Part III:
Section A
Section A
Section B
Section B
•
Ignore Question 3 (not in syllabus )
Descriptive Question
4. Aqueous sodium sulfate: Mg Æ no change Calcium Carbonate Æ no change Sodium hydroxide Universal indicator Æ blue Magnesium metal Æ no change Dil. Hydrochloric acid universal indicator Æ red calcium carbonate Æ bubbles of gas
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
* ignore question on calcium carbonate (not in syll)
b(i) hydrogen gas (ii) carbon dioxide gas c : Mg + 2HCl Æ MgCl2 + H2
Part IV: Separating Mixtures
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
Part II Solution ( Please see next page )
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
ANSWER KEY Part 1: Elements, Compounds and Mixtures
Part III:
Section A
Section A
Section B
Section B
•
Ignore Question 3 (not in syllabus )
Descriptive Question
4. Aqueous sodium sulfate: Mg Æ no change Calcium Carbonate Æ no change Sodium hydroxide Universal indicator Æ blue Magnesium metal Æ no change Dil. Hydrochloric acid universal indicator Æ red calcium carbonate Æ bubbles of gas
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
* ignore question on calcium carbonate (not in syll)
b(i) hydrogen gas (ii) carbon dioxide gas c : Mg + 2HCl Æ MgCl2 + H2
Part IV: Separating Mixtures
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
Part II Solution ( Please see next page )
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
LSS Sec 2 Chemistry 2009 SA2 Revision Worksheet
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