Conservation of Mass and Atom Economy
Chemistry · Year 11 · Quantitative Chemistry · 1.º Período

Conservation of Mass and Atom Economy

Students explore the law of conservation of mass in closed and non-enclosed systems. They will calculate atom economy to evaluate the efficiency of chemical reactions.

National Curriculum Attainment TargetsGCSE Chemistry 4.3.1.1 Conservation of massGCSE Chemistry 4.3.3.1 Atom economy

About This Topic

Students explore the law of conservation of mass in closed and non-enclosed systems. They will calculate atom economy to evaluate the efficiency of chemical reactions.

Key Questions

  1. Why does mass appear to change in some reactions?
  2. How do we calculate the relative formula mass of a compound?
  3. Why is a high atom economy important for sustainable chemistry?

Planning templates for Chemistry

Lesson Plan

Science

A science-specific template built around the scientific method, with sections for phenomena, investigation, data analysis, and claims-evidence-reasoning (CER) writing.

More in Quantitative Chemistry

The Mole Concept and Avogadro's Constant

An introduction to the mole as a measure of chemical amount. Students will use Avogadro's constant to calculate the number of particles in a given mass.

2 methodologies

Yield and Concentration of Solutions

Students learn to calculate the percentage yield of a reaction and the concentration of solutions in mol/dm³. They will perform titration calculations to find unknown concentrations.

2 methodologies