Module 2
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Proton Location: Charge: Mass:
Located in the nucleus: +1 charge 1 mass
Neutron Location: Charge: Mass:
Located in the nucleus 0 charge 1 mass
Electron Location: Charge: Mass
Located outside the nucleus -1 charge Almost 0 mass
Atomic number =
Number of protons
Number of protons =
Number of electrons
Mass number =
Number of protons and neutrons
Number of neutrons =
Mass number - atomic number
What’s an isotope
An isotope is an atom with the same protons but different neutrons
What is in a nuclide notation
Atomic number Mass number Symbol
What is at the top of a nuclide notation
Mass number
What is at the bottom of a nuclide notation
Atomic number
What is in the middle of a nuclide notation
Symbol
How many electrons are allowed to be in the lines
First: 2 Rest: 8
How can you tell if a substance is ionic
It can be metal or non-metal High mpt Conducts electricity Soluble in water
How can you tell if a substance is covalent
Only non-metal Low mpt Does nto usually dissolve Doesn’t conduct electricity
What group has a full outer energy level making them stable
Noble gases
How do other atoms get a stable electron arrangement
They must join to form a compound
Molecule
Two or more non-metals form a covalent compound
A covalent bond
The attraction of the positive nuclei for a shared pair of element
Monatomic
Type of bonding in noble gases
A diatonic element
2 atom bonded together through covalent bonding