| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Equal amounts in moles of gases occupy the same volume under the same conditions of temperature and pressure. |
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(Chem only) Do all gases occupy the same volume? Recall the equation:
number of moles =
mass/(relative formula mass)
Use the equation:
volume of gas at rtp = number of moles x molar gas volume (24 dm3)
for simple examples.
Extended writing: write instructions to another student on how to calculate the volume of a gas.
Use balanced equations and known volume of reactant/product to calculate the volumes of gaseous reactants/ products.
Molar volumes of gases https://www.youtube.com/watch?v=UCmYSIjOnUA
How to calculate gas volumes
https://www.youtube.com/watch?v=_CyIgvYNolE |
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The volume of one mole of any gas at room temperature and pressure (20oC and 1 atmosphere pressure) is 24 dm3. |
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(Chem only) What volume does one mole of any gas occupy at room temperature and pressure? |
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The volumes of gaseous reactants and products can be calculated from the balanced equation for the reaction. |
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(Chem only) How could you calculate the volume a gas would occupy if you were given the mass of gas made? |
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Students should be able to calculate the volume of a gas at room temperature and pressure from its mass and relative formula mass |
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(Chem only) If you have 88g of CO2. What volume would it occupy? |
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Students should be able to calculate volumes of gaseous reactants and products from a balanced equation and a given volume of a gaseous reactant or product |
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(Chem only) In the reaction CH4 2O2 ? CO2 2H2O (at rtp) what volume of water vapour is produced when 2.4 dm3 of methane burns? |
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Students should be able to change the subject of a mathematical equation. |
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(Chem only) Rearrange the volume of gas equation to calculate the number of moles |
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