Density Lab Questions

Density Lab

Investigation: How can we determine the density of any small object?

Materials: graduated cylinder (or beaker), scale, dense objects

Procedure:

1. Make a prediction: which of your objects is the most dense? Record your answer in the ‘data’ section.

2. In a data table that you come up with, record

- Each object’s mass using the scale
- Each object’s volume using the water displacement method

3. Calculate the density of each object using the density formula from the Earth Science Reference Tables

4. Data Analysis:

-According to your data, which object was the densest?

-Which was the least dense?

-How did you ensure that your data was correct? List your step by step approach to figuring out the density of each object.

-What were some possible sources of error in collecting your data?

If you run out of space on your lab, staple a piece of loose leaf to the back! (make sure you label which section it applies to)

Lab Questions:

1.What is the density of a piece of wood that has a mass of 25.0 grams and a volume of 29.4 cm3?

2.A cup of gold colored metal beads was measured to have a mass 425 grams. By water displacement, the volume of the beads was calculated to be 48.0 cm3. Given the following densities, identify the metal.

Gold: 19.3 g/mL Copper: 8.86 g/mL Bronze: 9.87 g/mL

3. What is the density of a metal ball that has a volume of 45 cm3 and a mass of 53 grams?

4. An ice cube measuring 5.80 cm by 5.80 cm by 5.80 cm has a density of 0.917 g/mL. What is the mass?

5. Five samples of the mineral pyrite were recorded on the graph below:

According to that data, what is the density of pyrite?

6. (from NY Regents)

Conclusion:

If you had a piece of copper (density 8.86m/L) and cut it in half, what would the density of each half be? Why?

Extension:

Think of three density questions to challenge your neighbor! (then answer your neighbor’s questions)