1. matter is made up of what atoms and molecules are made of, meaning anything made of positively charged protons, neutral neutrons, and negatively charged electrons.
2.Atoms comprise of the nucleus (which contains protons and neutrons) and electrons. Conversely, a molecule comprises of two or more, identical or different atoms, combined chemically.
3. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.
4. A compound is a pure substance composed of two or more different atoms chemically bonded to one another.
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