CHEMISTRY QUESTIONS would give more but I only have so many :/ 1. Classify each of the following as an atom or a molecule.
a. Be b. CO2 c. N2 d. H2O
2. Which of following are diatomic molecules? Circle your answers.
a. CO2 b. O2 c. N2 d. H2O

3. What type of bonds join the atoms of molecular compounds?

4. What types of elements tend to combine to form molecular compounds?

5. How do ionic compounds and molecular compounds differ in their relative melting and boiling points?

6. Draw the electron dot structure for the following molecules.
HF
PCl3
CH3Br
C2H2

CF4
NH3
H2O
Electron dot structure

8. Determine what type of bond—nonpolar covalent, polar covalent, or ionic—will form between each pair of atoms? (Use the electronegativity to help you).

P and O
Na and O
O and O
Electronegativity difference

Type of Bond

10. Draw the structural formulas for each molecule and identify polar covalent bonds by assigning the slightly positive (δ+) and slightly negative (δ-) symbols to the appropriate atoms.

a. NH3 b. CF4

13. Hydrogen bonds can only form when hydrogen is bonded to which 3 atoms?

14. List 4 characteristics of ionic compounds

15. List 4 characteristics of covalent compounds

16. List 4 characteristics of metallic compounds