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in a chemical reaction no mass is gained or lost when substances react to form new products.
the symbols used to represent an element or compound e.g. H2O for water
large deposits formed from the excrement and bodies of seabirds. Often found on islands.
the substance that undergoes reduction and causes the other substance to undergo oxidation.
when an aqueous solution of potassium cyanide is added to the slurry of metallic gold and ore....
when a nucleus is unstable and emits particles and energy.