7) Explain the similarity and difference in two events
names adding NaOH to water and adding Cao to water
and write Chemical equation.
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With NaOH you are only dissolving the material, whereas CaO reacts to make Ca(OH)2 . The calcium hydroxide has a lower solubility in water than NaOH and so will precipitate out. ... Adding CaO to Water :A lot of heat (exothermic reaction) is produced in the reaction, which may even cause the water to boil.
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The chemical formula of a compound is a symbolic representation of its chemical composition. ... For example, the chemical formula of water, which is H2O, suggests that two hydrogen atoms combine with one oxygen atom to form one molecule of water.
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