Class Activity 3 Flashcards
1
Q
- The the importance of the following concepts from the green chemistry point of view
- 1 Use of Renewable feed stock.
- Design chemicals and products to degrade after use
- Avoid chemical derivatives
- Increase energy efficiency
A
- 1: This is important because non-renewable feedstock usually come from fossil fuels which are depletable, cause waste and are harmful to the environment
- This will help prevent the accumulation of waste in the environment.
- This is a waste prevention measure since derivatives require additional reagents and cause waste.
- This will help minimize energy consumption.
2
Q
- What is solar cell ?
A
A device that converts light into electric current, using the photovoltaic effect.
3
Q
- Explain the advantages and disadvantages of solar energy source
A
Advantages:
- Sustainable and renewable
- Can produce electricity and heat water
- Solar panels require little maintenance
- Solar panels are silent producers of electricity
Disadvantages:
- Can only be created at night
- Power is reduced in cloudy weather
- Max output only when the panel is facing the sun
- Solar cells can only convert 20% of the suns rays into energy
4
Q
- Explain why wind energy is considered as one of the green energy sources. Also state the disadvantages of wind energy
A
*Wind energy is green because it does not cause pollution and is renewable
- Disadvantages:
- Unpredictable
- Costly
- Noise
- Threat to wildlife