Acids and bases Word Scramble
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Question | Answer |
What turns blue litmus paper red? | An acid |
What turns red litmus paper blue? | A base |
Bases that are soluble are called ? | Alkali |
What do you call a chemical that shows, by means of a colour change, whether a substance is an acid or a base ? | An indicator |
What do you call the scale that goes from 0 to 14 and measures the strength of an acid or base? | A pH scale |
Paper that is used to measure the pH of a substance. Neutral is 7. Less than 7 is an acid. Higher than 7 is a base | Universal indicator paper |
2 Strong corrosive acids are? | Hydrochloric acid and sulphuric acid |
2 Strong Corrosive bases are? | Sodium hydroxide and Potassium hydroxide |
What kind of taste does an acid have | Sharp and sour |
Sodium hydroxide is more commonly known as what? | Caustic soda |
Examples of quite harmless acids are what? | Citric acid (oranges), Carbonic acid (fizzy drinks) |
What kind of feel do all bases, dissolved in water have? | Soapy |
A salt is formed when a metal ion replaces what in an acid? | Hydrogen |
What do you call an experiment used to find out exactly how much hydrochloric acid is needed to neutralise a certain amount of sodium hydroxide? | Titration |
Acids and alkalis react together to form what two things.? | Salt and water |
Acids and carbonates react together to form what three things? | Salt, water and carbon dioxide |
When carrying out a titration what should you always put in the burette on top? | Acid |
Why would you add litmus indicator to the alkali during a titration? | To see a colour change |
The chemical formula for sodium hydroxide is what? | NaOH |
The chemical formula for hydrochloric acid is what? | HCl |
The chemical formula for sodium chloride is what? | NaCl |
The chemical formula for calcium carbonate (marble chips) is what? | CaCO3 |
What do you call the instrument used to accurately measure the alkali in an experiment? | Pipette |
How would you prove that salt and water has been formed after a titration experiment | Evaporate the water. |
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gcu science
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