What types of atoms form covalent compounds and where are they located in the Periodic Table?
What is Nonmetals, above the staircase
100
What is an alloy?
What is mixture of metals
100
What does it mean that a compound is polar? Provide an example
What is uneven sharing of electrons
100
Describe the properties of ionic compounds
What is hard, crystalline, high mp, brittle
200
Provide a representation (drawing)for ionic bonding
What is + - + - +
- + - + -
+ - + - +
200
How does covalent bonding differ from ionic bonding?
What is covalent -shared electrons, ionic lost/stolen
200
What model is used to depict metallic bonding -draw it.
What is electron sea
200
Provide an example of a nonpolar molecule
What is z -z, x-x
200
Describe the properties of covalent compounds
What is gas, liquid, solid, low mp, bp, brittle, nonconductive
300
Do ionic compounds conduct electriciy? Explain your answer
What is not as solids, yes when dissolved or molten
300
What determines the number of covalent bonds an atom is likely to form?
What is # of unpaired valence electrons
300
What is the force of attraction that holds metallic bonds together?
What is metal cation for shared free-flowing electrons
300
What is Electronegativity?
What is ability of an atom to pull on the shared electrons in a bond.
300
If a molecule has twelve carbon atoms, five oxygen and two nitrogen atoms , what is its formula?
What is C12 O5 N2
400
What is the Force of Attraction that holds ionic compounds together?
What is cation attracted to anion
400
What is the force of attraction that holds covalent compounds together?
What is +nuclei attracted to shared electrons
400
Can metals conduct? Explain why or why not.
What is yes, free moving electrons
400
When two Chlorine atoms bond, the nucleus of one atom attracts ....What?
What is the negative electrons that are shared.
500
Are Ionic compounds malleable? Explain your answer.
What is No, a shift in the crystal brings + next to + and - next to -
500
What types of multiple bonds exist for covalent compounds and how many electron pairs are involved in each?
What is single-1, double -2, triple 3 pairs
500
Explain why metals are malleable but ionic compounds are not.
What is metals -same in all directions
Ionic -crystal + - + - +
500
Can a molecule have polar bonds and still be nonpolar? Explain.
What is yes, CO2
500
Explain why metals are shiny.
What is low lying orbitals and free moving electrons are able to jump up to higher orbitals and then fall back down very easily -thus reflecting the light shined on them.