Parts of Atom
A subatomic particle that is charged positively
Proton
Can't be broken down by chemical reactions
Element
Very small and made of particles
Atom
ex: Zinc
Metal
1
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A subatomic particle that is outside the nucleus
Electron
horizontal lines that contain elements in the periodic table
Row
The number of protons in the nuclei
Atomic Number
ex: Sulfur
nonmetal
2
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The center of an atom
Nucleus
Collums of elements
Groups
States "all matter is made up of atoms"
Atomic Theory
ex: Arsenic
Metaliods
3
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A subatomic particle with no electric charge
Neutron
Metals, metalloids, nonmetals, noble gases, and rare earth metals are called ___________ in the Periodic Table
Categorizes
Same number of protons, different number of neutrons
Isotope
ex: Argon
Noble gas
4
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The smallest unit of an element
Particle
Total number of protons and neutrons in an atom.
Mass Number
The area inside an atom
Subatomic
ex: Nedymium
Rare earth metal
5
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