Converting between mass and volume using moles
I can combine mathematical relationships to calculate an unknown mass or volume.
Converting between mass and volume using moles
I can combine mathematical relationships to calculate an unknown mass or volume.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The volume of one mole of any gas at room temperature and pressure (20℃ and 1 atmosphere pressure) is 24 dm³.
- Reacting mass calculations can use a combination of mass to volume calculations and vice versa.
- Amount of substance (moles) can be calculated using multiple equations.
- The choice of equation for calculating moles depends on the context of the problem or calculation.
Keywords
Mole - A mole of something is 6.02 × 10²³ of it. The mass of a mole of a substance is its relative mass expressed in grams.
Volume - Volume is how much 3D space matter occupies. It is usually measured in cm³.
Molar gas volume - Molar gas volume is the volume occupied by one mole of any gas. It is equal to 24 dm³ or 24 000 cm³ at room temperature and pressure.
Stoichiometry - Stoichiometry refers to the molar ratio of the reactants and products in a chemical reaction.
Balanced symbol equation - A balanced symbol equation describes a reaction using a symbol equation with coefficients, which ensure there are equal numbers of atoms of each element on both sides of the symbol equation.
Common misconception
Pupils use an incorrect mathematical relationship to calculate the number of moles in a sample.
Depending on the type of substance (solid, solution or gas) a specific mathematical relationship for moles must be used. Challenge pupils to classify substances as (s), (aq), or (g) and apply correct mathematical relationship.
To help you plan your year 10 chemistry lesson on: Converting between mass and volume using moles, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 chemistry lesson on: Converting between mass and volume using moles, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 chemistry lessons from the Calculations involving masses unit, dive into the full secondary chemistry curriculum, or learn more about lesson planning.
Equipment
Sample of limestone (calcium carbonate), balance, tongs, heatproof mat, Bunsen burner, tripod, gauze.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
Lesson video
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