pH Effects on Aquatic Life and Soil

The video explores the concept of pH and its significance in various aspects of daily life. It explains how pH affects the environment, particularly aquatic life, due to acid rain. The importance of soil pH for plant growth is discussed, along with methods to adjust soil pH. The video also covers the role of pH in human health, including its impact on digestion and oral health. Additionally, it highlights how pH is involved in the self-defense mechanisms of certain animals and plants, such as honeybee stings and stinging plants.

What happens to aquatic life when the pH of water bodies decreases significantly?

• Aquatic life thrives

• Aquatic life remains unaffected

• Aquatic life increases in diversity

• Aquatic life becomes difficult to sustain

How can the pH of acidic soil be increased to support plant growth?

• By adding salt

• By adding sugar

• By adding lye

• By adding vinegar

What is a common method to lower the pH of alkaline soil?

• Adding gypsum

• Adding water

• Adding sugar

• Adding salt

What is a common remedy for neutralizing excess stomach acid?

• Drinking water

• Exercising

• Eating spicy food

• Taking antacid tablets

What is the role of magnesium hydroxide in treating hyperacidity?

• It makes the stomach alkaline

• It increases acidity

• It neutralizes excess acid

• It has no effect

What pH level in the mouth can lead to tooth enamel corrosion?

• Above 7

• Below 5.5

• Exactly 7

• Between 6 and 7

How do toothpastes help in preventing tooth decay?

• By being acidic

• By being basic

• By being neutral

• By being sugary

Why is it important to clean the mouth after eating?

• To enhance taste

• To prevent tooth decay

• To remove bacteria

• To increase acidity

What causes the acute pain from a honeybee sting?

• The venom is basic

• The venom is acidic

• The venom is neutral

• The venom is sugary

What can be applied to a honeybee sting to relieve pain?

• Lemon juice

• Vinegar

• Baking soda

• Salt water