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Questions and Answers
What is a common use of acids in food preservation?
What is a common use of acids in food preservation?
- To make food more nutritious
- To add flavor to food
- To add color to food
- To prevent food from going bad (correct)
What is a characteristic of acidic solutions?
What is a characteristic of acidic solutions?
- They conduct electricity (correct)
- They insulate electricity
- They are always colorless
- They are good for the skin
What is a common use of alkalis in household cleaning?
What is a common use of alkalis in household cleaning?
- To clean carpets
- To add shine to mirrors
- To remove grease from surfaces (correct)
- To polish metal
What is a safety precaution when handling acids and alkalis in the laboratory?
What is a safety precaution when handling acids and alkalis in the laboratory?
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What is the purpose of reading hazard warning labels on reagent bottles?
What is the purpose of reading hazard warning labels on reagent bottles?
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What is the first step in responding to an accident involving acids or alkalis?
What is the first step in responding to an accident involving acids or alkalis?
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What should you do if chemicals get into your eyes?
What should you do if chemicals get into your eyes?
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What is the primary function of acid-alkali indicators?
What is the primary function of acid-alkali indicators?
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What is the pH value that indicates a neutral substance?
What is the pH value that indicates a neutral substance?
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What type of instrument can measure the pH value of a substance accurately to two decimal places?
What type of instrument can measure the pH value of a substance accurately to two decimal places?
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What is the purpose of taking a sample of the acid or alkali to the hospital?
What is the purpose of taking a sample of the acid or alkali to the hospital?
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What is the range of the pH scale?
What is the range of the pH scale?
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