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General chemistry
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General chemistry
Thermistor
Chemistry; General chemistry
A device that senses temperature changes by using a resistor with an electrical resistance that falls when temperature rises.
Alkalinity
Chemistry; General chemistry
A measure of a material's ability to neutralise acids . Alkalinities are usually determined using titration .
Empirical formula
Chemistry; General chemistry
Empirical formulas show which elements are present in a compound, with their mole ratios indicated as subscripts. For example, the empirical formula of glucose is CH2O, which means that for every ...
Neutral
Chemistry; General chemistry
1. having no net electrical charge. Atoms are electrically neutral; ions are not. 2. A solution containing equal concentrations of H+ and OH-.
Thermochemical equation
Chemistry; General chemistry
An compact equation representing a chemical reaction that describes both the stoichiometry and the energetics of the reaction. For example, the thermochemical equation CH4(g) + 2 O2(g) CO2(g) + 2 ...
Calibration
Chemistry; General chemistry
Calibration is correcting a measuring instrument by measuring values whose true values are known. Calibration minimises systematic error .
Hydrophobic
Chemistry; General chemistry
A nonpolar molecule or group that has little affinity for water. Hydrophobic groups on molecules in solution tend to turn in on themselves or clump together with other hydrophobic groups because they ...
