Materials

- 10 solid cubes
- balance
- calculator
- ruler
- unknown dowel

Procedures

- Determine the mass (to 2 decimal digits) of each cube by using a balance.
- Find the volume of each cube by measuring its dimensions, volume = length × width × height.
- Compute the density (to 2 decimal digits) of each cube, density = mass ÷ volume.
- Compare calculated density with accepted density by calculating percent error: percent error = |error| ÷ accepted value × 100 % (error = experimental value – accepted value)

Data

cube mass (g) length (cm) width (cm) height (cm) volume (cm ^{3})density (g/cm ^{3})accepted density (g/cm ^{3})1 ??? ??? ??? ??? ??? ??? ??? 2 ??? ??? ??? ??? ??? ??? ??? 3 ??? ??? ??? ??? ??? ??? ??? 4 ??? ??? ??? ??? ??? ??? ??? 5 ??? ??? ??? ??? ??? ??? ??? 6 ??? ??? ??? ??? ??? ??? ??? 7 ??? ??? ??? ??? ??? ??? ??? 8 ??? ??? ??? ??? ??? ??? ??? 9 ??? ??? ??? ??? ??? ??? ??? 10 ??? ??? ??? ??? ??? ??? ???

Analysis

1. What is the independent/manipulated variable? ???

2. What is the dependent/responding variable? ???

3. What is the control variable/constant? ???

4. What does your conclusion show? ???

5. What is the difference between conclusion and theory? ???

6. What can you do to make sure that your conclusion is the theory? ???

7. Why is accepted density given after not before the lab? ???

8. How is density a different type of physical property than mass and volume? ???

9. How do you identify the unknown dowel? ???