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Acids and bases · Year 9 Chemistry

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What should you never do in order to see if a liquid is acidic?Acids and basesMultiple choiceYear 91No diagram
Which part of our body releases hydrochloric acid to kill bacteria on our food?Acids and basesMultiple choiceYear 91No diagram
Vinegar is an acid. When it is added to bicarbonate of soda, a chemical reaction occurs. The mixture fizzed showing a __________ was being released.Acids and basesShort answerYear 91No diagram
Naturally occurring acids are often found in fruit making them taste sour. Which fruit contains the least acid?Acids and basesMultiple choiceYear 91No diagram
What happens to the atoms in an acid during a chemical reaction?Acids and basesMultiple choiceYear 91No diagram
Which of the following are not chemical properties?Acids and basesMultiple choiceYear 92No diagram
Citric acid is found in many fruits. What does it taste like?Acids and basesMultiple choiceYear 91No diagram
Which of the following hazard symbols is found on corrosive substances?Acids and basesMultiple choiceYear 91Diagram
Which statement is the best definition of an alkali?Acids and basesMultiple choiceYear 91No diagram
A student tested a solution with red litmus paper. What result would the student see if the solution was an acid?Acids and basesMultiple choiceYear 91No diagram
Which one of these statements is false?Acids and basesMultiple choiceYear 91No diagram
An unknown solution was tested to see if it was an acid with red and blue litmus paper. The red litmus paper stayed red and the blue litmus paper stayed blue. Which statement is correct?Acids and basesMultiple choiceYear 91No diagram
Match the keyword to the correct statementpH scale and universal indicator solutionMatchingYear 93No diagram
Which of these statements about chemical reactions are true?pH scale and universal indicator solutionMultiple choiceYear 92No diagram
What is the result if blue litmus paper is dipped into lemon juice?pH scale and universal indicator solutionMultiple choiceYear 91No diagram
What is the result if red litmus paper is dipped into soapy water?pH scale and universal indicator solutionMultiple choiceYear 91No diagram
True or false? Vinegar can be used to neutralise sodium hydroxide.pH scale and universal indicator solutionMultiple choiceYear 91No diagram
Which containers of liquid may require a corrosive hazard label?pH scale and universal indicator solutionMultiple choiceYear 92No diagram
Match the keyword to the correct statement.pH scale and universal indicator solutionMatchingYear 94No diagram
A bee sting is acidic. What colour would universal indicator turn?pH scale and universal indicator solutionMultiple choiceYear 91No diagram
What does pH stand for?pH scale and universal indicator solutionMultiple choiceYear 91No diagram
Four solutions were tested with universal indicator. Rank the results in terms of acidity. Place the most acidic solution first.pH scale and universal indicator solutionOrderingYear 91No diagram
Select the correct statements about concentration of hydrogen and pH.pH scale and universal indicator solutionMultiple choiceYear 92No diagram
Solution A has a pH of 8 and solution B has a pH which is 1000 times more alkaline. What is the pH of solution B?pH scale and universal indicator solutionMultiple choiceYear 91No diagram
Match the following keywords to the correct description.Practical: red cabbage indicator solutionMatchingYear 93No diagram
Which of the following statements about solvents is correct?Practical: red cabbage indicator solutionMultiple choiceYear 91No diagram
Which two of the following keywords can be used to describe a substance that can dissolve in a liquid?Practical: red cabbage indicator solutionMultiple choiceYear 92No diagram
Some pH scales have a range from 0 to 14. Which of the following would describe a substance with a pH of 0?Practical: red cabbage indicator solutionMultiple choiceYear 91No diagram
The pH range most commonly used is from 1 to 14. What does the term 'range' mean?Practical: red cabbage indicator solutionMultiple choiceYear 91No diagram
The lower the concentration of hydrogen ions in a solution, the __________ the pH of the solution.Practical: red cabbage indicator solutionShort answerYear 91No diagram
A pupil uses red cabbage to make an indicator. The solution produced is too pale to show a colour change. How could the method to make the indicator be improved?Practical: red cabbage indicator solutionMultiple choiceYear 91No diagram
Which of the following describe what a mortar and pestle are used for?Practical: red cabbage indicator solutionMultiple choiceYear 91No diagram
Match the following colours of red cabbage indicator to the correct type of the substance.Practical: red cabbage indicator solutionMatchingYear 93No diagram
Which of the following statements explain why red cabbage and litmus are less effective than universal indicator at indicating the pH of a substance?Practical: red cabbage indicator solutionMultiple choiceYear 92No diagram
Different chemical indicators turn different colours at the same pH. Match the colour to the correct indicator if a solution has a pH of 7.Practical: red cabbage indicator solutionMatchingYear 94No diagram
A soluble substance dissolves in a solvent. If the solvent is water, what name is given to a soluble base?Practical: red cabbage indicator solutionMultiple choiceYear 91No diagram
Match the following key terms to the correct description.Chemical reactions: acid and metalMatchingYear 96No diagram
Which of the following describes what universal indicator is?Chemical reactions: acid and metalMultiple choiceYear 92No diagram
Where are metals found in the periodic table?Chemical reactions: acid and metalMultiple choiceYear 91No diagram
Match the chemical symbols to the correct metal.Chemical reactions: acid and metalMatchingYear 96No diagram
Which types of atom are found in nitric acid (HNO₃)?Chemical reactions: acid and metalMultiple choiceYear 93No diagram
Which types of atom are found in sulfuric acid (H₂SO₄)?Chemical reactions: acid and metalMultiple choiceYear 93No diagram
A pupil wants to test the gas that was released when zinc reacted with sulfuric acid. Which of the following tests would show that this gas was hydrogen?Chemical reactions: acid and metalMultiple choiceYear 91No diagram
Most metals corrode when they react with an acid. What does the word 'corrode' mean in this context?Chemical reactions: acid and metalMultiple choiceYear 91No diagram
Complete the word equation for the following reaction: magnesium + hydrochloric acid → __________ + hydrogen.Chemical reactions: acid and metalShort answerYear 91No diagram
Which of the following salts is produced when hydrochloric acid reacts with zinc?Chemical reactions: acid and metalMultiple choiceYear 91No diagram
A pupil wrote the following sentence: "When a metal reacts, it forms salt and a gas." Choose a more accurate sentence from the list.Chemical reactions: acid and metalMultiple choiceYear 91No diagram
Which is the correct symbol equation for the reaction between zinc and sulfuric acid?Chemical reactions: acid and metalMultiple choiceYear 91No diagram
What colour does universal indicator turn when a solution is neutral?Chemical reactions: neutralisationMultiple choiceYear 91No diagram
Match the following key terms to their definitions.Chemical reactions: neutralisationMatchingYear 94No diagram