Question

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Answer 1

Answer:

a. sodium is an element not a compound because it is made from atoms of only one element

b. melting of wax is physical change the state of wax changes from solid to liquid.

c. the oxygen molecule itself is free radicals or a b radical with two unpaired electrons

d. the symbol of tungsten is w derived from the German word language has found with tin and interference with the smelting of tin.

Explanation:

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