Dumb
“You got a bee sting. What should you apply to neutralise it?”
baking soda (sodium bicarbonate)
“Why is stomach pH low?”
The acidic environment helps to digest food, especially proteins.
It kills harmful bacteria and pathogens that may enter with food.
It activates digestive enzymes like pepsin, which need an acidic pH to work properly.
“Why do plants need specific soil pH?”
The availability of nutrients depends on soil pH.
👉 If the soil is too acidic or too alkaline, important minerals (like nitrogen, phosphorus, potassium) may become unavailable to plants.
The right pH helps roots absorb nutrients efficiently.
Some plants grow best in slightly acidic soil (like roses), while others prefer neutral or slightly alkaline soil.
“A river’s pH dropped to 5 due to acid rain. What will happen to the fish?”
Fish and other aquatic life cannot survive well in acidic water because it affects their bodily functions and reproduction.
Acidic water can damage fish gills and eggs, leading to lower survival rates.
Many species may die or migrate, reducing biodiversity.
“Your mouth’s pH is low after eating sweets. What should you do to prevent tooth decay?”
Rinse your mouth with water to wash away sugar and acids.
Brush your teeth with toothpaste (which is slightly basic) to neutralise the acid.
Avoid frequent snacking on sweets to prevent continuous acid production.