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Chemistry Basics

Core chemistry ideas

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labstudent 12 terms Feb 18, 2026
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Terms 12

1
Atom
Smallest unit of an element
2
Element
Substance made of one type of atom
3
Compound
Substance made of two or more elements chemically bonded
4
Molecule
Group of atoms bonded together
5
Proton
Positively charged particle in the nucleus
6
Neutron
Neutral particle in the nucleus
7
Electron
Negatively charged particle orbiting nucleus
8
Chemical Reaction
Process where substances change into new substances
9
pH
Measure of acidity or basicity
10
Acid
Substance with pH less than 7
11
Base
Substance with pH greater than 7
12
Periodic Table
Chart organizing all known chemical elements