Density Sweet Density Lab

Purpose: to compare the density of ½ and whole bars of chocolate. Hypothesis: Make a hypothesis concerning the half vs whole bar density. Procedure: 1. Using a ruler, measure the length, width and height of the whole candy bar. 2. Record this data in the data table of your lab report. 3. Calculate the volume of the whole candy bar; using the following formula: V = L x W x H 4. Record data in the data table of your lab report. 5. Measure the mass of the whole candy bar. 6. Record data in the data table of your lab report. 7. Calculate the density of the whole candy bar using the following formula: D=m÷V. 8. Using the scoopula, cut the candy bar in half. 9. Repeat steps 1-7 for the half candy bar. 10. Repeat steps 1 – 9 with the 3 Musketeers. Data/Observations: Candy Bar Length Width (cm) Height Volume Mass (g) Density (cm) (cm) (cm3) (g/cm3)

Milky Way

½ Milky Way

3 Musketeers

½ 3 Musketeers Calculations: Show all work for volume and density calculations below. Record answers in data table, round each to 3 decimal places and include units on every number! Graph: Construct a bar graph to show the relationship between the cut and uncut candy bars and their densities. Plot the different brands of cut and uncut candy bars on the x-axis and the density on the y-axis. Use a whole page. Analysis and Conclusion Questions: Sentences please. 1. Was your hypothesis supported or refuted? 2. According to the experiment you just did, what happened to the volume, mass, and density of the candy when you cut it in half? 3. The density of liquid water is 1.0 g/cm3. What would happen to the candy bars if placed into a container of water? Why? 4. Which candy bar turned out to be the most dense? 5. Why do you believe this candy bar was denser than the other?