what are atoms and molecules? explain with examples
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The universe is made up of atoms, which contain protons (positively charged particles), neutrons (particles with no charge), and electrons (negatively charged particles). ... Molecules are formed when two or more atoms bond together. If molecules contain atoms of different elements, that substance is known as a compound.
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The universe is made up of atoms, which contain protons, neutrons and electrons.
Molecules are formed when two or more atoms bond together.
If molecules contain atoms of different elements, that substance is known as a compound.
Hydrogen (H2), oxygen (O2), and chlorine (Cl2) molecules, for example, each contains two atoms. Another form of oxygen, ozone (O3), has three atoms, and sulfur (S8) has eight atoms. All elemental molecules are made of atoms of a single element.