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Science

Science(Acids and bases)

QuestionAnswer
Give 2 examples of everyday acids Lemon juice(citric acid) and Rain water(carbonic acid)
Give two examples of everyday bases Bleach(calcium carbonate(CaCO3) and Indigestiosn tablets(Limewater (Ca(OH)2))
What is an indicator? Substances which change colour depending on whether they are in an acidic or basic substance
What colour does litmus paper turn when in a base? Blue
What is the pH scale? It indicates the acidity or basicitiy of a solution, it runs from 0 to 14
Red on the pH scale is... Highly acidic
Yellow on the pH scale is... Nuetral
Purple on the pH scale is... Highly alkaline
An acid and a base --> Salt and water
An acid and a carbonate --> salt and water and carbon dioxide
What is a titration? Titrations allow you to find out exactly how much an acid is needed to neutralise a base
Hyrdocloric acid + sodium hydroxide ---> Sodium chloride and water
HCl + NaOH ---> NaCl = H2O
Zinc = hydrocloric acid ---> Zinc chloride + hyrdogen
Zn + 2HCl ---> ZnCl2 + H2
Created by: Chimozukee
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