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Answer the following questions using complete sentences.

1. What kind of bond forms between metals and non-metals? Describe how this type of bond works to hold atoms together.
2. Explain how you can tell by looking at the formula of a compound whether it is ionic.
3. What kind of bond forms between non-metals and non-metals? Describe how this type of bond works to hold atoms together.
4. Explain how you can tell by looking at the formula of a compound whether it is covalent/molecular.
5. The ions formed by elements in ionic compounds are reliably the same for certain groups in the periodic table. Remember, groups are columns and include Group 1, the Alkali Metals, and Group 17, the Halogens. For each of the groups listed write the charge of an ion formed by an element in that group when it is part of an ionic compound.
   
   Group 1: +1
   Group 2:
   Group 3:
   Group 11:
   Group 12:
   Group 13:
   Group 15:
   Group 16:
   Group 17:
   
6. When you combine ions to write the chemical formula of a compound how do you balance the charges to make it neutral? For example, show how to make all possible combinations of these ions: Na⁺¹, Al⁺³, O^–2, F^–1

1. For each element in the following table add Lewis dots to represent valence electrons for the neutral atom and for the ion. If an ion has lost all of its valence electrons do not draw any dots. For every ion, add the numerical value of the charge expected for that element in ionic compounds. One row is done by way of example.
   

   Element	Group No.	Neutral Atom Lewis Diagram	Ion Diagram incl. Charge
   Na	1	Na·	Na+1
   Mg
   Al
   P
   S
   Cl

2. For each element in the following table write the ion that it forms in compounds.

   Element	Ion	Element	Ion
   Li		I
   Be		Ba
   B		P
   N		Al
   O		S
   F		Mg
   Na		Cl

On the back of this sheet you will practice identifying ion charges and building neutral ionic compound formulas.