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Master Moles & Relative Mass

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Resource guide

Key stage

GCSE

Subject

Science

Time

~14 min

Access

Paid subscription

Assessment

Included

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About this resource and curriculum

Study guidance and sample questions

How to study with Master Moles & Relative Mass

This parent guide links the page examples with a practical study routine. The present resource is labelled Science, GCSE, Year 10, Year 11, E-Learning Module. Use that context, the learning summary and published prompts to clarify what successful work should reveal.

Prepare a focused session

Read the title and learning focus jointly. Ask the learner to anticipate the knowledge, vocabulary or plan they may need. Scan each sample and identify command words, values, clues, conditions or less familiar terms. Agree a realistic time window, remove interruptions and collect appropriate equipment such as paper, pencil, ruler, coloured pens, calculator, headphones or a device. Encourage an unaided initial attempt so the response reveals secure understanding and gaps. A reflective pause often aids remembering better than an immediate answer.

Make thinking published

Invite the learner to describe the task in their own words. They can underline essential information, separate a larger problem into shorter steps, sketch a diagram, sort evidence, rehearse a sentence or describe a planned method. Ask why their route fits and whether another plan could work. When work stops, offer a staged hint: state again the goal, point towards a related example, narrow the choice, then model only the next step. Return control straight afterwards. Spoken reasoning reveals confusions and practises correct subject language.

Check accuracy and understanding

Compare the attempt with published answer guidance after honest effort. Inspect more than the final response: review the method, explanation, units, evidence, sequence, spelling or presentation where related. Ask the learner to locate the initial point where their reasoning changed course. Complete corrections actively in a different colour or fresh space, followed by a concise description of the correction. For a correct answer, request justification and one unaided check. This separates assured knowledge from guessing while building accuracy, reflection and careful working habits.

Consolidate and extend

Finish with retrieval from memory. Cover the example and ask for the central idea, process or fact again. Create one small variation by changing a value, condition, example, viewpoint or level of support while keeping the learning focus. Invite the learner to write a similar question and supply checking guidance. Record one success and one precise next step, perhaps returning to terminology, practising a calculation, adding evidence or improving clarity. Recheck that target again in the week because spaced review gives stronger information than immediate repetition.

The interactive player, downloadable file and make answer material retain their existing access controls. The guide aids preparation, discussion and review.

Sample questions and answers

Try five questions from this exact activity. Review each authored answer and explanation, then note which ideas need another look. Compare the options and explain why the answer fits. Say the reasoning aloud or write a short justification before opening the interactive player to complete the activity and save progress.

Relative formula mass (Mr) is found by adding the … of all the atoms.
- Relative atomic masses (Ar)
- Charges
- Atomic numbers
- Densities
Sample answer: Relative atomic masses (Ar)
Explanation: Add the Ar values.
The relative atomic mass (Ar) of hydrogen is…
- 1
- 12
- 16
- 2
Sample answer: 1
Explanation: Ar of H = 1.
The relative atomic mass of oxygen is…
- 16
- 8
- 32
- 1
Sample answer: 16
Explanation: Ar of O = 16.
The relative atomic mass of carbon is…
- 12
- 6
- 14
- 16
Sample answer: 12
Explanation: Ar of C = 12.
What is the Mr of water, H₂O?
- 18
- 17
- 34
- 16
Sample answer: 18
Explanation: (1×2) + 16 = 18.

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