Which statements are true about molecules?

Select all that apply.

A) They are a group of atoms that are strongly joined.

B) They always contain different types of atoms.

C) They are the smallest unit of an element or a compound.

D) They always contain only one type of atom.

Respuesta :

I think is D that what i think

The statements that are true about molecules are:

  1. They are a group of atoms that are strongly joined.
  2. They are the smallest unit of an element or a compound.

WHAT IS A MOLECULE?

  • A molecule is a substance that consists of two or more atoms linked together by a chemical bond, usually covalent bond.

  • A molecule can also be referred to as the smallest unit of a pure substance (element or compound) that retains the chemical properties of such pure substance.

HOW CAN A MOLECULE BE FORMED:

  • Molecules can either be made up of atoms of same kind e.g two atoms of the same element coming together. E.g. oxygen gas (O2), hydrogen gas (H2), chlorine gas (Cl2)

  • Molecules can also be formed when two or more atoms of different kinds come together e.g CO2, H2O etc.

Therefore, the following statements about molecules are true:

They are a group of atoms that are strongly joined.

They are the smallest unit of an element or a compound.

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