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A student carried out a series of experiments to investigate the properties of sucrose (table sugar) - Junior Cycle Science - Question 13 - 2022
Question 13
A student carried out a series of experiments to investigate the properties of sucrose (table sugar). In the first experiment, the student investigated the melting p... show full transcript
Worked Solution & Example Answer:A student carried out a series of experiments to investigate the properties of sucrose (table sugar) - Junior Cycle Science - Question 13 - 2022
Step 1
Draw a labelled diagram of a circuit
Answer
To create a labelled diagram of an electric circuit that can be used to investigate the conductivity of a sucrose solution, follow these steps:
- Components: Include a battery, a bulb (or a buzzer), and connecting wires.
- Arrangement: Connect the battery to the bulb (or buzzer) in series with the sucrose solution. Ensure the bulb is in line with the circuit to visualize if the sucrose solution conducts electricity.
- Symbols: Use the conventional symbols for battery (long and short line for positive and negative), bulb (a circle with a cross), and connecting wires (straight lines).
Your diagram should illustrate these elements clearly, with appropriate labels used for each component.
Step 2
Describe how the student could have separated the sucrose from the water
Answer
To separate the sucrose from the water, the student could use the process of evaporation. This method involves the following steps:
- Heating: Apply heat to the solution to evaporate the water. A heat source like a Bunsen burner or a hot plate should be used cautiously to avoid burning the sucrose.
- Observation: As water evaporates, the sucrose will start to crystallize and solidify at the bottom of the container.
- Completion: Once all the water has evaporated, the remaining substance in the container will be solid sucrose.
Labelled Diagram: Draw a container with the sucrose at the bottom and indicate evaporating water vapor above it. Label the crystallized sucrose clearly to illustrate the separation achieved.