Waste Disposal

Only distilled water is used in this lab. All waste generated can be disposed of in

the sink.

Safety Considerations

Different types of glassware are utilized in this laboratory. Take special care to

handle volumetric pipets gently as the neck of the pipet can easily break if a

large force is applied.

Pre-Lab Questions

1. What described tools should not be used to measure volumes?

2. Which tools are continuous (can measure any volume) and which tools are

discrete (can only measure certain volumes)?

3. What is a meniscus in the chemistry lab and how is it important in volume

measurement tools?

4. You have a 15.3 gram mass of liquid water. What is the volume of the water at

21 degrees Celsius? What is the volume of water at 93.3 degrees Celsius?

5. Explain, using a particulate level diagram, what is happening with the total

volume and the water molecules in the solution as you change the

temperature from 21 to 93.3 degrees Celsius.

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