Question

Select the correct statement or statements about compounds and molecules:

Answer 1

Answer:

1) and 3)

Step-by-step explanation:

Answer 2

Answer:

1) Compounds don’t act like their elements; Compounds act like a different substance.

3) A molecule is two or more atoms bonded together.

Step-by-step explanation:

A compound is a molecule which is made of atoms from different elements.

Compounds are useful beacuse they don't actually act like their elements. For example, if you think about $H_{2}O$, you observe that it's a compund of 2 atoms of hydrogen and 1 atom of oxygen, but the compund doesn't act like hydrogen or oxygen, it's water. Therefore, the first choice is correct.

Now, as we said before, a molecule is form by atoms, specifically by two or more, because a single atom cannot form a molecule, it would be just an atom by itself. Therefore, the third choice is correct.

So, the right choices are 1 and 3.