25 terms

Ionic and Covalent Bonds

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Ion
This is an atom or group of atoms that has an electric charge
Cation
When an atom loses an electron, it loses a negative charge and becomes a _________.
Anion
When an atom gains an electron, it gains a negative charge and becomes a _______.
Ionic Bond
This type of bond is made between a Metal and a Non-metal
Formula Unit
This is a combination of symbols that shows the ratio of elements in a compound. Ex: H2O
subscript
This tells you the # of atoms present for the element and is located to the right of the # in a formula unit. EX: There are 2 atoms of Hydrogen (H) in the formula unit H2O
Cation
For an ionic compound, the name of the ______ ion comes first, followed by the name of the Anion.
Metal
These elements always lose electrons and become Cations
Non-metal
These elements always gain electrons and become Anions
Valence Electrons
The electrons responsible for an atom's chemical behavior are called ______________.
Octet Rule
Atoms want to have 8 electrons in their outer most energy level
a Metal + a Non-metal
What type of elements will always make an Ionic bond?
a Non-metal + a Non-metal
What type of elements will always make a covalent bond?
Covalent Bond
Bond made between at least 2 Non-metal atoms
Diatomic Molecules
The seven elements that naturally have 2 atoms share electrons. These elements are Br, I, N, Cl, H, O, and F
Molecule
a neutral group of atoms joined together by covalent bonds
3
How many electrons does Phosphorus (P) need to have an octet?
2
How many electrons does Oxygen (O) need to have an octet?
1
How many electrons does Iodine (I) need to have an octet?
Dot Structures
Gilbert Lewis invented the method of identifying the # of valence electrons an element can make a bond called __________
Ionic Bond
Cation(s) and Anion(s) combine to cancel out their charges in this type of bond
Covalent Bond
Electrons being shared between at least 2 atoms in this type of bond
Ionic Bond
Electrons being "transfered" between at least 2 atoms in this type of bond
Boron (B)
Which atom does not make a diatomic molecule?
1) Oxygen (O)
2) Nitrogen (N)
3) Boron (B)
4) Bromine (Br)
Group #
An element's __________ will tell you the # of valence electrons it contains