periodic table of elements. elements are types of atoms! elements can not be broken down into...
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Periodic Table of Elements
Elements are types of atoms!
• Elements can not be broken down into simpler substances.
• Everything is made of matter = atoms.
What do atoms look like?• Protons (+)
– Positive charge– Located in the nucleus– The number of protons = the
signature of the atom.
• Neutrons – No charge– Located in the nucleus
• Electrons (-)– Negative charge– Located in the electron cloud
(electron orbitals)• 2, 8, 18, 36
– Super small compared to protons and neutrons.
What makes one type of atom different from another?
What does the periodic table tell you?
• Atomic Number = Number of Protons– Tells what type of atom
you have.– Tells the number of
electrons in an electrically neutral atom.
• Atomic Mass = # of protons + # of neutrons– Mass of nucleus
Protons = ____________
Neutrons= ___________
Electrons =___________Draw the Bohr Model
Protons = ___________
Neutrons = __________
Electrons = ___________Draw the Bohr Model
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