Lab #13 Aquatic Environment

Aim: To demonstrate that seawater contains salt.

Apparatus & Material: beaker, seawater, tripod stand, wire gauze, split, Bunsen burner and rubber tube.

Method:

1. Gather all apparatus and materials.

2. Set up the apparatus as shown in diagram.

3. Add 100ml of seawater to the beaker and place it on the tripod stand.

4. Light the Bunsen burner and place it under the beaker of seawater.

5. Allow the seawater to boil for an hour.

6. Record all observations.

Diagram:

Result: (Write down what you observed during the experiment)

Discussion: (Use the questions provided below to assist you in writing your discussion in paragraph format. DONOT write the questions in your lab book.)

1. What is water and why is it important?

2. What does seawater contain?

3. After the seawater was completely boiled, what is the name of the residue that was left in the beaker? (Give the scientific name and common name).

4. Name and explain the process that caused the water to turn into water vapor (gas).

Conclusion: (Write about the outcome of your experiment based on the aim of the lab).

Prepared by: Mr. K. Waite