Divide the class into groups of three or four. Each group must determine the bonding type of a number of substances for which they do not know the chemical formula by seeing what they dissolve in, water or vegetable oil. Students should enter these substances in the board chart. Point out applications for solubility and bonding. Artists use solubility in the creative process.
Crayons dissolve in turpentine.
Crayons do not dissolve in water solutions. Like dissolves like. Have students suggest procedures. Divide the class into groups of 3 or 4. B. Determine the volume of water to be used in each trial.