Acids, Alkalis and Litmus Flashcards
Acids taste…
sour
Alkalis feel…
soapy
Lemons and Limes both contain…
citric acid
Strong acids can burn our skin. We say they are..
corrosive
Name the 3 main acids used in a school lab
Hydrochloric acid
Sulphuric acid
Nitric acid
What do we call the special dyes that can tell us if something is an acid, alkali or neutral?
Indicators
What does red litmus paper do in acid?
stays red
What does red litmus paper do in alkali?
turns blue
What does blue litmus paper do in acid?
turns red
What does blue litmus paper do in alkali?
stays blue
What does it mean if a solution makes red litmus paper stay red and blue litmus paper stay blue?
The solution must be neutral
A substance that is neither acid or alkali is called
neutral
Calcium carbonate can neutralise acids. What is mainly made from calcium carbonate?
Limestone
Marble
