Ionic And Molecular Compounds - Chemistry Lab (Page 4 of 4) in pdf

Ionic And Molecular Compounds - Chemistry Lab Page 4

Ionic and Molecular Compounds

Name: _____________________________

Chemistry 2

Date: ______________________

Post-activity

1. Use the electronegativity chart to determine the electronegativity values of the elements.

Determine the type of bond formed between the elements based on the electronegativity

differences. Show work for you calculations.

a) C and O _________________________________________________________________

b) Na and Br _______________________________________________________________

c) H and S _________________________________________________________________

d) B and H _________________________________________________________________

e) K and Cl ________________________________________________________________

f) Ca and O ________________________________________________________________

2. a. Look at your answers to number 1. In general, what combination of elements

(metals/nonmetals) results in an ionic bond? ____________________________________

________________________________________________________________________

b. In general, what combination of elements (metals/nonmetals) results in a covalent

bond? ___________________________________________________________________

________________________________________________________________________

3. a. Describe the type of structures that ionic compounds form? ______________________

________________________________________________________________________

b. In terms of structure, why do we use empirical formulas (formulas that show only the

simplest ratio) for ionic compounds? __________________________________________

________________________________________________________________________

4. a. Describe the type of structures that covalently bonded compounds form? ___________

________________________________________________________________________

b. In terms of structure, why do we use molecular formulas (formulas that show the exact

number of atoms) for covalently bonded compounds? _____________________________

________________________________________________________________________

Ionic And Molecular Compounds - Chemistry Lab Page 4