Ions
Ionic Bonds
Covalent Bonds
Ionic vs. Covalent
Naming Compounds
100
Why do atoms give or take electrons?
To have a full outer energy level.
100
Ionic bonds form between ______ & ______.
Metals and Nonmetals
100
Covalent Bonds form between ______ & ______.
Nonmetals & Nonmetals
100
What is the difference between ionic and covalent compounds as far as electrons are concerned?
Atoms in ionic compounds transfer electrons to each other, and in covalent compounds the atoms share electrons
100
Name the ionic compound: Li2O
Lithium Oxide
200
What charge would an ion of Nitrogen have?
-3
200
What holds the atoms in ionic bonds together?
The ion's opposite charges.
Ex. Na+ and F-...the opposite charges make the ions "stick" together.
200
In a (an) _______________, electrons are shared.
Covalent bond
200
Formula of Lithium Nitride
Li3N
200
Name this compound: CuCl2
Copper Chloride
300
An atom that has lost or gained electrons becomes a (an) _______.
ion
300
True or False?
Chlorine (#17) can form an ionic bond with all group 1 elements.
False - Hydrogen is a nonmetal and will form a covalent bond with Chlorine
300
What holds the atoms in covalent bonds together?
The shared electrons are attached to BOTH nuclei
300
Why do ionic compounds conduct when dissolved in water?
Water separates the ionic compound into it's two ions. The ions are charged particles, and will conduct electricity in water.
300
Name this compound: PbS
Lead Sulfide
400
Do metals tend to give away or take valence electrons?
Give away
400
Draw the lewis dot structure for Sodium Sulfide.
400
Draw the lewis dot structure of a covalent compounds that is composed of Oxygen & Flourine
400
Do ionic compounds have a low or high melting point?
High melting point.
(It takes a lot of energy to break ionic bonds)
400
Name the covalent compound: CH4
Carbon tetrahydride
500
What is the charge of a magnesium ion?
+2
500
How many ions of Potassium (#19) will there be in an ionic bond between Potassium and Nitrogen (#7)?
3
500
How many bonds (sharing of 2 e-) will there be between two Oxygen atoms?
2 bonds (see below)
500
When dissolved in water, are covalent compounds good or poor conductors?
Poor
500
Name this compound: H2S
dihydrogen monosulfide