Starter quiz
- Which of the following household products contain acid?
- vinegar ✓
- lemons ✓
- orange juice ✓
- soap
-
- What is the pH of a neutral solution?
- '7' ✓
- When using universal indicator solution, what colour will a strong acid be?
- green
- blue
- purple
- yellow
- red ✓
-
- Match the acids names with their formula.
- nitric acid⇔HNO₃ ✓
- sulfuric acid⇔H₂SO₄ ✓
- hydrochloric acid⇔HCl ✓
- Name a pollutant in the atmosphere which can produce acid rain.
- 'sulfur dioxide' ✓
- Which of the following rocks are sedimentary?
- limestone ✓
- dolomite ✓
- marble
- sandstone ✓
- slate
-
Exit quiz
- Which of the following pH values is normal rainwater likely to be?
- 4
- 9
- 7
- 6 ✓
-
- How does the pH of acid rain compare to the pH of vinegar and oranges?
- The pH of acid rain is higher than the pH of vinegar and citric acid in oranges. ✓
- The pH of acid rain is the same as the pH of vinegar and citric acid in oranges.
- The pH of acid rain is less than the pH of vinegar and citric acid in oranges.
-
- Name an acid found in acid rain.
- 'sulfuric acid' ✓
- What is pH?
- The measure of hydroxide ion concentration in a solution.
- The measure of hydrogen ion concentration in a solution. ✓
- A scale of acidity and alkalinity.
- When a solution is neutral.
-
- What is produced when a sedimentary rock containing carbonate compounds reacts with acid in acid rain?
- salt + water
- salt + hydrogen
- salt + carbon dioxide + water ✓
- salt + carbon dioxide + hydrogen
-
- Which of the following are impacts of acid rain?
- Organisms within aquatic food webs dying. ✓
- Corroding human skin.
- Plants dying as they cannot absorb essential nutrients. ✓
- Holes forming in plastic outdoor equipment.
- Chemical weathering of rocks. ✓
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Worksheet
Presentation
Video
Lesson Details
Key learning points
- The pH of rain water is naturally below 7.
- Chemical reactions between certain pollutants and water in the atmosphere may cause a decrease in the pH of rainwater.
- Acid rain is not as acidic as vinegar or citric acid that is found in lemons and oranges.
- Acid rain chemically reacts with carbonates that form many rocks to produce a salt, water and carbon dioxide.
- Acid rain can have long term effects on habitats and ecosystems.
Common misconception
Acid rain is immediately harmful to human skin. Acid rain's effects are quick and devastating.
Educate that acid rain is less acidic than household acids. Discuss the long-term ecological and structural impacts of acid rain.
Keywords
Ph - pH is a measure of the hydrogen ion (H⁺) concentration in a solution.
Ph scale - The pH scale measures acidity and alkalinity and is often shown with values ranging from 1 to 14. A pH below 7 indicates an acid, a pH above 7 indicates an alkali, and a pH of 7 is neutral.
Acid rain - Acid rain is rainwater which has been made more acidic by pollutant gases such as sulfur dioxide and nitrogen oxides.
Chemical weathering - Chemical weathering is when rocks are broken down by a chemical change, for example reactions with acid rain.