Question

8. You are provided with the following laboratory apparatus, beaker, measuring cylinder, thermometer pipette, test tube, flasks, watch glass, gas jar, and thistle funnel.

(a) Name the materials used to make up the above apparatus

Answer 1

[AI-generated answer — Bot GPT-4o]

The laboratory apparatus listed can be made from a variety of materials, depending on their specific applications and the chemical substances they will handle. Here are the common materials used to make each item:

1. **Beaker**:
- **Materials**: Borosilicate glass (e.g., Pyrex), polypropylene (for plastic beakers).

2. **Measuring Cylinder**:
- **Materials**: Borosilicate glass, polypropylene, polymethylpentene (PMP).

3. **Thermometer**:
- **Materials**: Glass (containment tube, often filled with mercury or colored alcohol), stainless steel (for digital thermometers), plastic (casing for some types).

4. **Pipette**:
- **Materials**: Glass (for traditional pipettes), plastic (polyethylene for disposable pipettes).

5. **Test Tube**:
- **Materials**: Borosilicate glass, polystyrene, polypropylene.

6. **Flasks** (including Erlenmeyer and volumetric flasks):
- **Materials**: Borosilicate glass, polyethylene, polypropylene.

7. **Watch Glass**:
- **Materials**: Borosilicate glass.

8. **Gas Jar**:
- **Materials**: Glass (typically clear).

9. **Thistle Funnel**:
- **Materials**: Glass, plastic (such as polyethylene).

These materials are chosen for their specific properties, such as chemical resistance, thermal stability, and durability, depending on the intended use of the apparatus. Borosilicate glass is especially favored for its ability to withstand thermal stress and resist chemical corrosion. Plastic materials like polypropylene are commonly used for their durability and resistance to certain chemicals.