Question

1. is a sample of water (h₂o) made up of atoms or molecules? most things are not pure substances, they are made from combinations of many different atoms joined together. atoms can joined together by forming chemical bonds, and when two or more atoms joined together through chemical bonds, they formed a molecules. they have a formula to tell us what atoms are found in the molecule. the chemical formula of a molecule tells us the number of atoms in the molecule, and the type of atoms in the molecule. now the chemical formula for water is (h₂o) and this formula is telling us that water is made from 2 hydrogen atoms, and 1 oxygen atom. therefore water (h₂o) is made up of atoms

Explanation:

Atoms bond to form molecules. Water's formula $H_2O$ shows 2 hydrogen and 1 oxygen atom bonded, so water is made of molecules.

Answer:

Molecules