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Chemistry Part 1

Teacher: Stephanie Lindwall
Across
Electron on the outer most energy level
The sum of protons and neutrons in an atom
Area surrounding the nucleus where electrons are found
Particles that make up the atom...protons, neutrons, and electrons
Set of characters used to identify an element
Substance that cannot be broken down into any other substances
A combination of two or more atoms that are bonded together
The columns going down the periodic table
Contains protons and neutrons
Down
Form of charge on sub-atomic particles: protons +, neutrons 0, electrons -
Negatively charged particle on energy levels
Arrangment of elements in order of atomic number
The number of protons in an atom
A neutral particle in the nucleus
Positively charged particle in the nucleus
A substance made of two or more elements chemically bonded
The rows going across the periodic table
Smallest particle of matter