Lesson 3

Density Predictions

1. Solid objects made from different substances may have different densities.

a. Substances less dense than water float in water.

b. Some liquids float on top of other liquids.

2. Density is a characteristic property of a substance.

a. Density of water is 1.0g/cm3

b. Density of corn syrup is 1.4 g/cm3

3. Insolubility means that a substance will not mix with another substance.

a. Liquids that are insoluble in one another are called immiscible.

b. True immiscibility is a function of the structure of a liquid’s molecules (two or more atoms held together by chemical forces) and is not related to density.

4. When immiscible liquids are mixed, they settle out to form a density column.

5. A density column is a column of liquids that have separated into distinct layers.