Is all that chemistry dangerous?
This lesson helps to explain chemical reactions.
Author: Horváthné Kunstár Andrea
chemical reaction, reaction, physical change, chemical symbol, formula, chemical equation, change of state, fusion, decomposition, conservation of mass, state of matter, stoichiometry, battery, molecular compound, ionic compound, compound, periodic table, metals, nonmetals, reagent, product, sodium hydroxide, iron, sulphur, iron sulphide, copper sulphate, magnesium, magnesium oxide, experiment, test tube, chemistry, physics, general chemistry, biology
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