Problem

What is the density of water and ice?

Materials:

5 ml. Pipette, clamp, centimeter ruler, triple-beam balance, beaker, ice tray

Can you identify each of the materials?

Click on the image for a closer view.

Procedure

Partially fill a 5 ml. plastic pipette with water. Remove all the air bubbles. Note: It is best to boil the water first to assist in removing the air bubbles.

Put the pipette into the freezer overnight.

Copy Table I (shown in the Results Section below) into your lab notebook. Or print the table from here

Begin to collect your data. Click on the images for a sharper look and take your measurements.

Find the volume of the ice in pipette. Find the mass of the ice and pipette.

Record your results in Table I.

Melt the ice, by holding the pipette in the palm of your hand. The heat from your hand will slowly melt the ice.Observe what has happened after two minutes. All the ice has turned to water. Notice how the level has changed.

Click on the images and

Find the volume of the water in pipette. Find the weight of the water and pipette.

Record your results in Table I.

Empty the water from the pippette Find the mass of the empty pipette

Complete Table I.

Results

Using Table I answer the following questions.