Edexcel GCSE Chemistry · 1CH0

Mathematical Applications

What you need to know

Apply arithmetic computation and ratio methods when determining empirical formulae and balancing equations.
Perform multistep calculations involving ratio and percentage.
Use standard form in calculations involving the Avogadro constant.
Change the subject of a mathematical equation.
Provide answers to an appropriate number of significant figures.
Convert units where appropriate, particularly from mass to moles.