7. A chemical reaction combines the metal sodium (Na) and the gas chlorine (CI2) to form sodium chloride, commonly known as table salt (NaCl). Explain why the product has different properties from the reactants.

a is the answer to this question

explanation:

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

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plasma - state of matter made up of electrically charged particles