This lesson contains 28 slides, with interactive quiz and text slides.
Items in this lesson
IGCSE Chemistry 0620
Topic 3 Chemistry of our Environment
-Air Quality and Climate
20 September 2023
Slide 1 - Slide
share a presentation of my research about air quality and climate,
give feedback on my classmates' presentations, and
make a summary of all shared research presentations in my notebook.
I intend to:
20 September 2023, Wednesday
Slide 2 - Slide
IGCSE Chemistry 0620
Topic 3 Chemistry of our Environment - WATER
18 September 2023
Slide 3 - Slide
🜛 Present the collab output about the purity of water
Retrieval Activity
timer
2:00
18 September 2023, Monday
Slide 4 - Slide
IGCSE Chemistry 0620
Topic 3 Chemistry of our Environment - WATER
18 September 2023
Slide 5 - Slide
Are all impurities found in water harmful to animals and humans?
A question that matters!
13 September 2023, Wednesday
Slide 6 - Slide
IGCSE Chemistry 0620
Topic 3 Chemistry of our Environment - WATER
18 September 2023
Slide 7 - Slide
Classwork 6
Chemical Tests for and Purity of Water
timer
15:00
18 September 2023, Monday
Slide 8 - Slide
Uses of Water
Domestic uses: for drinking, cooking, gardening, and general sanitation
Agricultural uses: as a drink for animals and watering crops
Industrial uses: as a solvent, as a coolant and heated to make steam used to generate electricity
18 September 2023, Monday
Slide 9 - Slide
Sources of water
lakes
rivers
underground water sources (groundwater)
A rock that stores water is known as an aquifer
18 September 2023, Monday
Slide 10 - Slide
Substances dissolved in water
Dissolved oxygen
Metal compounds
Plastics
Sewage
Harmful microbes
Nitrates from fertilisers
Phosphates from fertilisers and detergents
18 September 2023, Monday
Slide 11 - Slide
QUESTION
What causes these substances to be dissolved in natural water?
Is water from a natural source safe to consume?
18 September 2023, Monday
Slide 12 - Slide
IGCSE Chemistry 0620
Topic 3 Chemistry of our Environment - WATER
18 September 2023
Slide 13 - Slide
Beneficial substances
Dissolved oxygen - essential for aquatic life
Metal compounds - some provide essential minerals which are necessary for life, such as calcium and magnesium
18 September 2023, Monday
Slide 14 - Slide
Potentially harmful substances
Metal compounds - some are toxic like aluminium and lead
Some plastics - may be harmful to aquatic life in many ways, e.g. getting trapped in plastic waste, dying of starvation as their stomach is filled with plastic
Sewage - contains harmful microbes which can cause disease
Nitrate & phosphates from fertilisers - these can promote the growth of aquatic plant life which leads to deoxygenation of water. Ultimately, this can cause damage to aquatic life in a process called eutrophication (you do not need to know the details of this process)
18 September 2023, Monday
Slide 15 - Slide
Potentially harmful substances
Metal compounds can be both beneficial and harmful, it depends on the metal within the compound, e.g. calcium, magnesium, potassium and sodium are all metals which are essential for life. Harmful metals include lead, arsenic and mercury. ☠️
18 September 2023, Monday
Slide 16 - Slide
Collab Work
Purification of Domestic Water
timer
15:00
18 September 2023, Monday
Slide 17 - Slide
IGCSE Chemistry 0620
Topic 3 Chemistry of our Environment -
AIR QUALITY AND CLIMATE CHANGE
18 September 2023
Slide 18 - Slide
Oral Presentation
18 September 2023, Wednesday
TOPICS
Patheany - Composition of air and air pollution, page 327