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Atoms

Atoms Quiz

TermDefinition
Atomic Number is equal to the number of protons
The number of protons is equal to the number of ______________ in an element electrons
Atomic Mass is equal to the _____________________ and __________________ in the element protons and neutrons
The word "atom" comes from the Greek work meaning cannot be divided
Atoms in the outermost shell are known as the valence electrons
According to Dalton’s Atomic Theory, all ________________ are composed of atoms elements
Atom’s mass is measured in amu's
Simple substances that cannot be broken down into simpler substances elements
Two or more elements chemically combined compound
Since atoms have the same number of protons as electrons they are neutral
Compared to protons and neutrons, electrons are smaller
Thomsons Model of an Atom Looks like a cookie - electrons and protons spread all throughout the atom
Rutherford's Model of an Atom Mostly empty space
Bohr's Model of an Atom atoms have energy levels
Protons have a ___________________ charge positive
Electrons have a ___________________ charge negative
Neutrons have a ____________________ charge neutral/no charge
Created by: cbeltrani