Final answer:
Atoms are the building blocks of matter, and they combine to form molecules. The mole is a unit used to measure the amount of a substance. The relationship between atoms, moles, and molecules is that moles measure the amount of substance, while atoms and molecules represent the constituents of that substance.
Step-by-step explanation:
In chemistry, atoms are the building blocks of matter. They combine to form molecules, which are groups of atoms held together by chemical bonds. The mole is a unit used to measure the amount of a substance. It is defined as the number of atoms in 12 grams of carbon-12. The Avogadro's number, which is approximately 6.022 x 10^23, represents the number of particles in one mole of a substance.
The relationship between atoms, moles, and molecules can be explained using an example. Let's consider water (H2O). In one molecule of water, we have two hydrogen atoms (H) and one oxygen atom (O) bonded together. This represents the chemical formula H2O. Now, if we have one mole of water, it means we have Avogadro's number of water molecules, which is approximately 6.022 x 10^23 molecules. Within each molecule of water, we still have the same ratio of atoms (2 hydrogen atoms and 1 oxygen atom). So, we can say that the relationship between atoms, moles, and molecules is that moles measure the amount of substance, while atoms and molecules represent the constituents of that substance.