Question

For each substance below, decide if it is an atom or a molecule.

Column A
1. F2:

2. Ca:

3. C2H6:

4. I:

5. Al:

6. H2SO4:

Choice: atom or molecule

choose the correct answer

Answer 1

Here are the classifications for each substance in Column A:

1. F2: **Molecule** (it's a diatomic molecule made of two fluorine atoms)
2. Ca: **Atom** (calcium is a single element)
3. C2H6: **Molecule** (it's an organic molecule made of two carbon atoms and six hydrogen atoms)
4. I: **Atom** (iodine can exist as a single atom, although it is often found as I2, it can also be represented as a single atom in certain contexts)
5. Al: **Atom** (aluminum is a single element)
6. H2SO4: **Molecule** (it's a compound made of two hydrogen atoms, one sulfur atom, and four oxygen atoms)

So the choices are:
1. Molecule
2. Atom
3. Molecule
4. Atom
5. Atom
6. Molecule