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OCR 21C Additional Science (Pre-2011)



What is homeostasis, the importance of homeostasis, maintaining body temperature, maintaining water balance
Growth and development
Cell reproduction: mitosis and meiosis, how genes control growth and development, how organisms develop from a single cell
Brain and mind
How organisms respond to changes in the environment, how information is passed through the nervous system, reflex action, how humans learn, the brain and memory, how drugs affect our nervous system


Chemical patterns
Arrangement of elements, group 1 properties, group 7 properties, chemical equations, atomic structure, spectra, electron arrangement, ions, formulae and properties
Chemicals of the natural environment
Air and molecular compounds, ionic compounds, rocks and minerals, biological compounds, extraction of metals, metal properties
Chemical synthesis
Making useful chemicals, acids and alkalis, stages and techniques, calculations and titrations, rate of reaction


Explaining motion
How can we describe motion, what are forces, what is the connection between forces and motion, how can we describe motion in terms of energy changes
Electric circuits
Electric charge, resistance and current, how do parallel and series circuits work, how is mains electricity produced, mains electricity
Wave model of radiation
What are waves, why do scientists think light and sound are waves, the electromagnetic spectrum, how is information added to a wave

Ideas in context


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