Final answer:
Atoms are the basic building blocks of all matter, consisting of protons, neutrons, and electrons.
Step-by-step explanation:
The basic building blocks of all matter are atoms. An atom is the smallest unit of a chemical element that still retains the chemical properties of that element. Atoms are made up of three subatomic particles: protons, neutrons, and electrons. Protons are positively charged particles found in the nucleus of an atom, electrons are negatively charged particles that orbit around the nucleus, and neutrons are uncharged particles also found in the nucleus.
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