Methods of collecting gases

Methods of collecting gases

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Overview
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Connecting to the Curriculum
Marking Student Responses
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Further Resources
This task is about different methods to collect gases.
Four gases have these characteristics:
  • Gas A is soluble in water and lighter than air.
  • Gas B is soluble in water and heavier than air.
  • Gas C is insoluble in water and lighter than air.
  • Gas D is insoluble in water and heavier than air.

Question

a)  Which method would most likely be used for collecting Gas B?

    • collecting-gases-option-1.png

    • collecting-gases-option-2.png

    • collecting-gases-option-3.png

Question

b)  Which method would most likely be used for collecting Gas C?

    • collecting-gases-option-1.png

    • collecting-gases-option-2.png

    • collecting-gases-option-3.png

Question

collecting-gases-option-1.png
c)  Which gas could be collected using Method I?

    • Gas A

    • Gas B

    • Gas C

    • Gas D

Task administration: 
This task can be completed with pencil and paper or online with auto-marking.
Level:
5
Curriculum info: 
Science, Knowledge, Material World
Key Competencies: 
Thinking
Keywords: 
gas, collection methods
Description of task: 
Students are provided with drawings of three methods to collect gases and the characteristics of four gases. Students match the gases with the method of collection that would need to be used.
Curriculum Links: 
Science capabilities
The capabilities focus is brought about by the conversations you have and the questions you ask.
 
Capability: Interpret representations
This resource provides opportunities to discuss and interpret how different models are used in science to explore things that cannot be seen. 
 
Capability: Use evidence
This resource provides opportunities to discuss using information text and diagrams to make inferences.
Science capabilities: 
Interpret representations, Use evidence
Answers/responses: 
  

Y9 (08/1997)

Y10 (08/1997)
a) collecting-gases-option-3.png moderate moderate
b) collecting-gases-option-2.png difficult moderate
c) Gas A moderate moderate
Diagnostic and formative information: 
  Common error
a) 34% of students chose method II.
b) 29% of students chose method I.
c) Gas D chosen by 23% of students.