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O level Chemistry Chapter 1: Measurements in Chemistry

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Last updated: March 9, 2022
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First submittedMarch 9, 2022
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Average score38.5%
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Question
Answer
To what accuracy do beakers, conical flasks and measuring cylinders measure volume to?
1cm3
To what accuracy does a burette measure volume to?
0.10cm3
To what accuracy does a pipette measure volume to?
0.1cm3
What volume does a pipette measure?
25.0cm3
What is the maximum volume a burette can hold?
50.0cm3
How can gases be dried?
Using drying agents/hygroscopes
What gases does concentrated sulfuric acid dry?
All but alkaline gases
Question
Answer
What gases do quicklime and calcium chloride dry?
All but acidic gases
When is displacement of water used to collect gases
When the gas is insoluble or slightly soluble
When is upwards displacement of air used to collect gases?
When the gas is fairly or very soluble and is denser than air
When is downwards displacement of air used to collect gases
When the gas is fairly or very soluble and is less dense than air
How soluble is carbon dioxide and oxygen in water?
Slightly soluble
How soluble is hydrogen and methane in water?
Insoluble
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