Calculating Percentage by Mass

A fully resourced lesson for GCSE AQA chemistry on calculating percentage by mass.
Suitable and applicable for GCSE Chemistry Trilogy, and Combined Science Higher and Foundation.

Lesson Objectives

• Recall how to calculate relative formula mass using a periodic table
• Calculate the percentage by mass of an element in a substance using masses
• Calculate the percentage by mass of an element in a substance using relative formula mass and atomic mass

Lesson includes:

• Lesson powerpoint (including instructions on lesson activities, equipment to order, slide answers)
• Student practical
• Student worksheet (PDF and editable word versions)
• Student worksheet answers (PDF and editable word versions)