Which statements describe molecules? Check all that apply.

Question

Molecules are made of two or more atoms.
Molecules are all the same size
Molecules range in size.
Molecules are only made of atoms of the same element.
Molecules are only made of atoms of different elements.
Molecules are made of atoms of the same element or different elements.

Answer 1

The statements that accurately describe molecules are:

1. Molecules are made of two or more atoms.
2. Molecules range in size.
3. Molecules are made of atoms of the same element or different elements.

The other statements do not accurately describe molecules:

• "Molecules are all the same size" is false, as molecules can vary greatly in size.
• "Molecules are only made of atoms of the same element" is false because while some molecules (like O2) consist of the same element, others (like H2O) consist of different elements.
• "Molecules are only made of atoms of different elements" is false for the same reason; some molecules can contain the same element.