Chemical systems and industry: Identify and describe the impact of scientific knowledge of the hydrosphere on the quality of human, environmental, and socio-economic development
Subject outcome
Subject outcome 7.1: Identify and describe the impact of scientific knowledge of the hydrosphere on the quality of human, environmental, and socio-economic development.
Learning outcomes
- Describe the water cycle, its physical changes and energy transfers.
- Identify and describe the macroscopic properties of the three phases of water related to their microscopic properties.
- Define the term water pollution and give examples (also refer to industrial, agricultural, and human pollution).
- Classify water in terms of hardness and explain water hardness and describe its effects.
- Describe the types of impurity found in water and the reason for purification (human and industrial).
- Define water treatment and softening and give examples.
Unit 1 outcomes
By the end of this unit you will be able to:
- Describe the water cycle.
- Understand the physical changes of state within the water cycle.
- Understand the energy transfers within the water cycle.
- Understand the macroscopic properties of water, ice and water vapour in relation to their particle structure.
Unit 2 outcomes
By the end of this unit you will be able to:
- Understand what water pollution is.
- Identify the main causes:
- industry, including mining
- agriculture
- human activities.
Unit 3 outcomes
By the end of this unit you will be able to:
- Classify water in terms of hardness.
- Explain water hardness and describe its effects.
- Describe the types of impurities found in water.
- Explain why water used by people and industries is purified.
- Define the water treatment and softening processes and give examples of them.
