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Which subject	Chemistry
What topic	Review of moles, reacting agents and concentration of solutions (in g/dm3)
What length (min)	30
What age group	Year or Grade 10
Class size	20
What curriculum
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Ask some students to presents their homework
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Number of slides	5
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Lesson plan

Topic

Review of Moles, Reacting Agents and Concentration of Solutions (in g/dm³)

Objectives

• To reinforce the concept of moles and their calculations in chemical reactions.
• To understand the role of reacting agents in a chemical equation.
• To calculate the concentration of solutions in g/dm³.
• To apply knowledge through practice problems and examples.

Materials

• Whiteboard and markers
• PowerPoint presentation (or comparable digital resources)
• Worksheets with practice problems and examples
• Scientific calculators
• Access to textbooks or online resources for further reading

Grade/Age Group

Year 10 (Age 15-16)

Subject

Chemistry

National Curriculum Correspondence

This lesson meets the requirements outlined in the UK National Curriculum for Key Stage 4 (KS4) Chemistry, particularly in the areas of chemical calculations, solutions, and reaction agents.

Class Size

20 students

Lesson Structure

Step Number	Step Title	Length (minutes)	Details
1	Introduction to Moles	5	Brief review of moles, calculations, and their relevance in reactions.
2	Reacting Agents Overview	5	Discuss different types of reacting agents and their roles in chemical reactions.
3	Concentration of Solutions	10	Explain how to calculate concentration in g/dm³, including the formula and examples.
4	Guided Practice	5	Work through example problems as a class, reinforcing the concepts introduced.
5	Independent Practice	5	Distribute worksheets for students to complete individually, applying the learned concepts.
6	Review and Wrap-up	5	Go over homework answers without student presentations; reinforce mastery of the lesson’s objectives.

Assessment

• Formative assessment through class participation during guided practice.
• Review of independent practice worksheets to evaluate understanding.

Homework

• Complete a worksheet of practice problems focusing on moles, reacting agents, and concentrations.
• Submit worksheets for feedback, which will be checked but not presented during class.

Additional Notes

• Ensure students have access to calculators for independent practice.
• Encourage students to work collaboratively during guided practice to enhance understanding.

Lesson script