Chemistry 5070/42 — May/June 2015
Cambridge O-Level · Alternative to Practical · worked solutions for every part, with the mark scheme
Topics Experimental Contexts · Observations and Measurements · Qualitative Analysis · Analysis, Conclusions and Evaluation · Use of Techniques, Apparatus and Materials
A student heats a small piece of magnesium ribbon in a crucible for several minutes. Some magnesium oxide is produced.
Describe the appearance of the magnesium before heating.
______
Construct the equation for this reaction.
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When magnesium is added to dilute sulfuric acid a gas is produced.
Name the gas and give a test and observation to identify this gas.
name ______
test and observation
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Describe what is seen when magnesium oxide is added to excess dilute sulfuric acid.
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Construct the equation for this reaction.
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The rest of this paper
9 more questions- Q2Observations and Measurements · Experimental Contexts · Analysis, Conclusions and Evaluation · Use of Techniques, Apparatus and Materials13M
- Q3Use of Techniques, Apparatus and Materials1M
- Q4Experimental Contexts1M
- Q5Experimental Contexts1M
- Q6Qualitative Analysis1M
- Q7Experimental Contexts · Analysis, Conclusions and Evaluation1M
- Q8Analysis, Conclusions and Evaluation · Experimental Contexts · Use of Techniques, Apparatus and Materials · Observations and Measurements15M
- Q9Qualitative Analysis8M
- Q10Observations and Measurements · Analysis, Conclusions and Evaluation · Experimental Contexts · Qualitative Analysis13M