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PAG 1
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卡片总数: 3 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
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#1
正面 (问题)
1.3 Determination of the formula for magnesium oxide Why did you need to raise the crucible lid slightly when you first heated the magnesium?
背面 (解答)
To let oxygen enter so it could react with the magnesium
#2
正面 (问题)
The formula from this experiment often shows slightly less oxygen than is present in pure magnesium oxide. Suggest why this should be so.
背面 (解答)
#3
正面 (问题)
What was the purpose of breaking up the magnesium oxide whilst heating the contents of the crucible strongly for 5 minutes?
背面 (解答)