Ionic And Molecular Compounds - Chemistry Lab (Page 3 of 4) in pdf

Ionic And Molecular Compounds - Chemistry Lab Page 3

Ionic and Molecular Compounds

Name: _____________________________

Chemistry 2

Date: ______________________

Drawing

Describe or draw the repeating pattern.

Drawing

Describe or draw the repeating pattern.

Part B. Building Molecules of Covalent Compounds

1. Obtain a ball and stick molecular model kit. The plastic balls represent atoms and the

sticks represent covalent bonds.

2. Build one water molecule (H

O). Make a drawing in the data table. How is this model

different from the crystal lattice model? ________________________________________

________________________________________________________________________

3. Build another water molecule (H

O). Water is a polar molecule in which the hydrogen

has a slight positive charge and the oxygen has a slight negative charge. Arrange the two

molecules to show that opposite charges attract. Make a drawing in the data table. How

is this model different from the crystal lattice model? _____________________________

________________________________________________________________________

4. Build four more water molecules to make a total of six. Arrange the six molecules to

show that opposite charges attract. Make a drawing in the data table. Observe how each

molecule is separate from the others. How is this model different from the crystal lattice

model? _________________________________________________________________

________________________________________________________________________

Part B. Data Table

Drawing of 1

Drawing of 2 water molecules Drawing of 6 water molecules

water molecule

Ionic And Molecular Compounds - Chemistry Lab Page 3