Lab Activity 2.1
Relating Mass and Volume
Purpose:
· To investigate the relationship between two properties of matter by interpreting data and to reinforce skills required to measure matter.
· To formulate a definition of density.
Materials:
Beaker of water
100-mL Graduated Cylinder
Tripple beam Balance
Procedures:
- Read all directions for this activity before you begin your work.
- Complete this data table as per your teachers directions:
| Liquid
|
Mass of Graduated Cylinder and Liquid
|
Mass Of Graduated Cylinder (stays the same)
|
Mass of Liquid
|
Volume of Liquid
|
| Water
|
|
|
|
10mL
|
| Water
|
|
|
|
20mL
|
| Water
|
|
|
|
30mL
|
| Water
|
|
|
|
40mL
|
| Water
|
|
|
|
50mL
|
| Water
|
|
|
|
60mL
|
- Use the balance to find the mass of the empty graduated cylinder to the nearest .01g.
- Record the mass of the graduated cylinder in your data table for all six lines.
- Pour 10mL of water into the graduated cylinder. Use the balance to find the mass of the graduated cylinder and water. Record the new mass in column two.
- Add 10mL more water to the graduated cylinder for a total of 20mL. Repeat step 5.
- Add 10mL more water to the graduated cylinder for a total of 30mL. Repeat step 5.
- Repeat this until you have a total of 60mL in the graduated cylinder.
- Empty your graduated cylinder and beaker. Return all equipment to their original place.
Conclusion Questions:
- Complete the mass of liquid column. To do this, subtract the mass of the graduated cylinder and liquid column, minus the mass of the graduated cylinder column for each row.
- Compare your results with those of another two teams. Is the mass of water a repeatable measurement? (can more than one person get nearly the same results)
- Look at your data. As the volume of water increases, does the mass increase or decrease?
- Complete the following statements:
a. For every 10mL increase in the volume of water, the mass changes by about _____g.
b. 100mL of water should be about _____g. I can safely say this because:
- Under normal circumstances would you expect your classmates to get similar results?
- Using the data from the table, please find the density of water. Calculate this value for each trial.
- Was there a significant difference in all of you calculations?
- As mass and volume increased, what happened to the density?
- Can you formulate a relationship between mass, volume and density?
Going Further:
Mario wants to know how much water he will need to fill an aquarium with the following dimensions: Length= 50cm, Width=25cm, Depth=30cm.
a. How many ml of water will he need?
b. Mario’s aquarium stand can hold about 50,000 grams. If his empty aquarium weighs about 15,000 grams could filling up the aquarium with water cause his aquarium stand to collapse? Explain.
