Elements Combining Together Unit Test

Learning Target 2.1.1: I can determine if a chemical compound has ionic or covalent bonds.

Learning Target 2.1.2: I can draw Lewis structures for covalently bonded compounds that include single, double and triple bonds.

Learning Target 2.1.3: I can name and write empirical formulas for ionic compounds.

Learning Target 2.1.4: can name and write empirical formulas for molecular compounds

1. For the following, state whether the element is a metal or a nonmetal

1. Calcium ____________
2. Oxygen_____________
3. Phosphorus__________
4. Copper______________
5. Potassium ___________
6. Hydrogen____________

2. Explain the difference between ionic bonding and covalent bonding in terms of the types of elements involved in the bond.
3. In an ionic bond valence electrons are ________________ while in a covalent bond valence electrons are ______________.
4. Chemical compound Q has a high melting point, when dissolved in water exhibits high electrical conductivity. The bonding type of this compound is most likely _______________.
5. Chemical compound Z has a low melting point and when dissolved in water exhibits no electrical conductivity. The bonding type of this compound is most likely________________.

6. Draw a Lewis Dot Structure showing the correct number of valence electrons for the following atoms.

7. State the number of valence electrons and draw the Lewis Structure for each molecular compound.

8. For each chemical formula, state if it is ionic or covalent (molecular) and then give it’s name.

9. For each of the following chemical formulas , write the chemical name