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IB Chem 9 SL
Question | Answer |
---|---|
Oxidation | gain of oxygen, loss of hydrogen, loss of electronns or gain in oxidation number |
Reduction | loss of oxygen, gain of hydrogen, gain of electrons or decrease in oxidation number |
Oxidising agent | substance that is reduced |
Reducing agent | substance that is oxidised |
Biological oxygen demand (BOD) | the measure of the dissolved oxygen (in ppm) needed to biologically decompose the organic matter in water over 5 days, at 20°C. |
Voltaic/Galvanic cell | Uses chemical reactions to produce electricity. Chemical to electrical energy. |
Electrolytic cell | Uses electricity to produce chemical reactions. Electrical to chemical energy. |