pH Scale
Neutral substances have this pH
pH 7
What sour fruit contains citric acid?
What do alkalis taste like?
Sour or bitter
What is litmus solution made from?
Lichens
What is the equation for neutralisation?
Acid + Alkali --> Salt + Water
This is the range of the pH scale
What is pH 0 - 14
What do acids commonly taste like?
What is more alkaline: Soap or Bleach?
Bleach
Give one example of something that can be used to make a natural indicator
What could I add to acidic soil to raise its pH?
Lime chips
A solution with a pH 8 is...
Alkaline
What is more acidic: Vinegar or Coca-Cola?
Vinegar
What group of household products are commonly alkaline?
Cleaning products
What colour does universal indicator turn in a strong acid?
Red
What could I add to an acidic bee sting to relieve the pain?
Bicarbonate of soda, toothpaste, soap
A solution with a pH of 6.99 is ...
An Acid
Strong acids have a pH less than..
Less than pH 3
Strong alkalis have a pH greater than
pH 11 (11 to 14)
What does universal indicator turn in a neutral solution?
Green
What could I add to an alkaline wasp sting to relieve the pain?
vinegar, lemon juice
This happens to the pH of an acid when you add water
Hydrochloric acid is found in what part of the body
What is the stomach?
What is an alkaline you use twice a day?
Toothpaste
What is the advantage of universal indicator?
Gives a large colour spectrum for different pHs.
Is adding water to an acid an example of neutralisation?
No - this is called dillution.