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Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 683 · 40 questions
TalentJR

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

NameDateTime takenScore ___ / 40
  1. 1.True or false: sand does not dissolve in water. (a) True (b) False
  2. 2.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it shrinks (c) it turns blue (d) there is no change
  3. 3.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
  4. 4.🌱 Which of these does not sprout? (a) boiled seeds (b) wet seeds by a window (c) seeds on wet cotton (d) wet seeds in the dark
  5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a battery cell (d) cotton or cloth
  6. 6.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) muddy water (c) a magnet (d) turmeric powder
  7. 7.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed
  8. 8.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
  9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a mirror (d) a piece of string
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  11. 11.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the bottle got tired (c) the balloon got cold (d) an ingredient ran out
  12. 12.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rinse with clean water (c) rub it hard (d) ignore it
  13. 13.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  14. 14.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we keep it the same (b) we measure it (c) we change it
  15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) an adult with an iron (c) lemon juice (d) a mirror
  16. 16.🍞 Which of these is something yeast does not need? (a) time (b) salt (c) sugar (d) warm water
  17. 17.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) moong seeds (c) water (d) yeast
  18. 18.True or false: a mirror is not needed for sprouting seeds. (a) False (b) True
  19. 19.True or false: yeast is not needed for sprouting seeds. (a) False (b) True
  20. 20.True or false: lemon juice is an acid. (a) True (b) False
  21. 21.🧺 Do we need moong seeds for sprouting seeds? (a) needed (b) not needed
  22. 22.True or false: turmeric powder is needed for making butter. (a) False (b) True
  23. 23.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they melt (c) no, never (d) they turn to stones
  24. 24.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
  25. 25.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
  26. 26.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
  27. 27.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  28. 28.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  29. 29.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) shake it near your face (c) seal it in a glass jar (d) keep it away from eyes
  30. 30.True or false: a cotton bud is not needed for the secret lemon message. (a) False (b) True
  31. 31.True or false: reading the message is a job for an adult. (a) True (b) False
  32. 32.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  33. 33.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water
  34. 34.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is the one thing we change. (a) False (b) True
  35. 35.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
  36. 36.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
  37. 37.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds in the freezer (c) wet seeds by a window (d) seeds on dry cotton
  38. 38.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
  39. 39.True or false: tamarind water is neutral. (a) False (b) True
  40. 40.True or false: a battery cell is not needed for making butter. (a) False (b) True

Answer key

  1. True
  2. it grows bigger
  3. not needed
  4. boiled seeds
  5. a battery cell
  6. muddy water
  7. not needed
  8. yeast needs it
  9. a mirror
  10. we keep it the same
  11. an ingredient ran out
  12. rinse with clean water
  13. does not dissolve
  14. we keep it the same
  15. a mirror
  16. salt
  17. yeast
  18. True
  19. True
  20. True
  21. needed
  22. False
  23. yes, they sprout
  24. clearer
  25. a child can do it
  26. sugar crystals form
  27. does not dissolve
  28. False
  29. keep it away from eyes
  30. False
  31. False
  32. can be undone
  33. tamarind water
  34. False
  35. use only kitchen items
  36. not needed
  37. wet seeds by a window
  38. needed
  39. False
  40. True

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