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Required Practical 2.14 – Percentage of Oxygen in Air

Edexcel IGCSE Chemistry | Practical Worksheet + Teacher Notes

Overview

This required practical resource supports specification point 2.14 and guides students in determining the percentage of oxygen in air using either rusting of iron or combustion of phosphorus. It is designed to reinforce gas volume concepts and introduce basic practical data collection and analysis.

Specification Covered

• 2.14: Determine the approximate percentage by volume of oxygen in air using a metal or a non-metal

What’s Included

• Student Practical Worksheet
• Teacher and Technician Notes section
• Model conclusion answer
• MSDS summary for chemicals used

Features

• Fully aligned with Edexcel IGCSE Chemistry Unit 2
• Clear background, aim, apparatus list, and method instructions
• Built-in table for results and volume change calculations
• Includes both the iron wool and phosphorus methods
• Emphasises lab safety and correct observation of gas volume change
• Clean Synapse Science layout for cohesive use alongside other required practicals