Science S2 Overview
In S2 pupils study the following units on a rotation, as well as carrying out two practical investigation which focus on fair testing, experiemental design, variables, recording and presenting results, drawing conclusions and evaluating experiments.
Neutralisation and Fertilisers
Classify chemicals and household substances as acids, alkalis and neutral substances by measuring the pH. Investigate what happens to the pH of an acid or alkali when water is added. Neutralise an acid by adding an alkali and study everyday examples of neutralisation reactions. Investigate acid rain, its causes and impact on the environment. Learn about chemicals used to help plants grow and the nutrients plants need (NPK). Make a fertiliser using a neutralisation reaction and investigate the properties of fertilisers and the environmental impact of using too much fertilisers.
Let's get electrical
Learn about electricity by carry out practical investigate into static electricity and charged particles. Learn how to draw and understand circuit diagrams. Investigate how the components in a circuit can be connected in series of parallel and consider how this effects the voltage and current in the circuit. Investigate how batteries produce electricity and find the best fruity battery.
DNA and Enzymes
Learn about DNA, chromosomes, genes and how we inherit characteristics from our parents. Extract DNA from bananas. Identify dominant and recessive genes in a population. Investigate selective breeding, genetic engineering/genetic modification, gene therapy and cloning. Carry out practical work to investigate enzymes and their properties and their use in industries.
Learn about minerals and basic types of rocks; sedimentary, metamorphic and igneous. Investigate the formation and characteristics of the different types of rocks and uses of soils. Participate in practical activities to extract useful substances from natural resources and place metals in an order of reactivity, and relate these findings to their everyday uses.
Visible and Invisible Radiation
Learn about what happens when light is reflected or refracted by materials. Investigate white light and the colours of light that make up white light. Learn about the structure of the eye and long and short sighted vision. Carryout experiments to investigate what happens to light when it passes through concave and convex lenses and how these can be used to correct eyesight. Investigate mixing colours of light. Research the electromagnetic spectrum; Gamma radiation, X-rays, Ultra violet light, Visible light, Infra-red radiation, microwaves and radiowaves.
Learn about microorganisms, investigating these normally invisible organisms – bacteria, viruses and fungi. Carryout experiments to sample microbes in the environment and grow cultures of microorganisms. Research their role in causing diseases and the human body’s defences against these microbes. Investigate some of the useful applications of these microbes.