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what is a chemical reaction? what changes occure in a chemical reaction? give 5-6 examples of a chemical reaction. |
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Answer» Answer: CHEMICAL reaction A chemical reaction a is change in which one or more substance(s) or reactant(s) react(s) to form new substance(s) with entirely different properties. The reacting species (molecule, atom, ion) are known as reactants (the substance that UNDERGO chemical change reaction) and the new species formed as a result of the reaction are called products (the new substance formed during reaction). Example 2 NA (s) + 2 H₂O (l) → 2 NaOH (aq) + H₂ (s) ↑ Sodium Water Sodium HYDROGEN hydroxide More examples -
3 Fe (s) + 4 H₂O (l ) → Fe₃O₄ (s) + 4 H₂ (g) 2 Pb (NO₃) (s) → 2 PBO (s) + 4 NO₂ (g) + O₂ (g) Na₂SO₄ (s) + BaCl₂ (s) → BaSO₄ (s) + 2 NaCl (s) |
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