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Which of the following statements is true?
Protons have negative charges.
A piece of gold is made only of gold atoms.
All molecules are compounds.
Compounds have the same properties as the elements they are made from

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Answer:

Below.

Explanation:

True:

A piece of gold is made only of gold atoms.

Untrue:

Protons have negative charges ( they are positive).

All molecules are compounds . (Oxygen gas O2 is a molecule but not a compound as the 2 atoms are the same).

Compounds have the same properties as the elements they are made from.

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