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22 December, 06:12

Which substance cannot be decomposed by a chemical change?

1. HI

2. AlCl3

3. H2O

4. Cu

+4
Answers (2)
  1. 22 December, 06:20
    0
    4 - Cu. Because copper is a element and an element cannot be broken down.
  2. 22 December, 06:34
    0
    The answer would be 4. Cu
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