What fertilisers provide
What fertilisers provide
A fertiliser is a substance added to soil to supply plants with the elements they need to grow. Growing crops remove nitrogen, phosphorus and potassium from the soil, so fertilisers return these elements as soluble compounds.
Step-by-step lessons on Edexcel GCSE Chemistry 6.3.3 Fertilisers and the preparation of ammonium sulfate. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.