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What is an atom?
The smallest unit of matter, made of protons, neutrons, and electrons.
What are the 3 subatomic particles?
Protons, neutrons, and electrons.
What is the nucleus of an atom?
The center of the atom containing protons and neutrons.
What is an element?
A substance made of only one type of atom.
What is a compound?
A substance made from two or more different elements chemically bonded.
What is a molecule?
Two or more atoms chemically bonded together. They can be of the same or different elements.
What is a mixture?
A combination of elements or compounds that are not chemically bonded.