Chemistry·Scientific processes · NSSCO 1.1
Mathematical requirements
Narrated lesson · press play
Chemistry runs on numbers, so first we sharpen the maths you'll use all year — working with averages, fractions, percentages, ratios and reciprocals, spotting direct and inverse proportion, using indices and powers, estimating answers, and rearranging equations like x = yz.
What you'll learn in this lesson
By the end you should be able to (NSSCO Chemistry 1.1):
- Add, subtract, multiply and divide confidently
- Use averages, decimals, fractions, percentages, ratios and reciprocals
- Use direct and inverse proportion
- Use positive and negative whole-number indices and exponents in calculations
- Make approximate evaluations of numerical expressions
- Solve equations of the form x = yz for any one term when the other two are known
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