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Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 623 · 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: a comb is not needed for the yeast balloon. (a) True (b) False
  2. 2.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  3. 3.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a balloon (c) a bowl (d) cold water to rinse
  4. 4.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a shallow dish (d) yeast
  6. 6.True or false: glucose powder dissolves in water. (a) True (b) False
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  8. 8.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
  9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
  10. 10.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) stem (c) roots (d) leaves
  11. 11.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a magnet (d) water
  12. 12.🫧 Which of these is a base? (a) sugar water (b) salt water (c) vinegar (d) soap solution
  13. 13.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  14. 14.🫧 Which of these is neutral? (a) detergent water (b) curd (c) orange juice (d) plain water
  15. 15.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  16. 16.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  17. 17.🌱 Is salt needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
  18. 18.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is what we measure. (a) False (b) True
  19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) True (b) False
  20. 20.True or false: salt water is neutral. (a) False (b) True
  21. 21.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
  22. 22.True or false: warm water is something yeast needs. (a) True (b) False
  23. 23.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) baking soda (c) vinegar (d) sugar
  24. 24.🌱 Which of these sprouts in a few days? (a) wet seeds in the dark (b) seeds on dry cotton (c) seeds in the freezer (d) boiled seeds
  25. 25.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
  26. 26.🔍 Which is the odd one out? (a) salt (b) sunlight (c) time (d) a magnet
  27. 27.True or false: curd is an acid. (a) False (b) True
  28. 28.🍞 Which of these is something yeast does not need? (a) warm water (b) a magnet (c) time (d) sugar
  29. 29.True or false: sugar is something yeast needs. (a) False (b) True
  30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we measure it (c) we change it
  31. 31.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  32. 32.True or false: small stones from dal is done by handpicking. (a) False (b) True
  33. 33.True or false: a clear plastic bag is not needed for the leafy bag test. (a) True (b) False
  34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) muddy water (c) a clean glass (d) cotton or cloth
  35. 35.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) True (b) False
  36. 36.🪴 Which part of a plant does this job: take in water from soil? (a) roots (b) stem (c) flower (d) leaves
  37. 37.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) yeast (c) a cotton bud (d) lemon juice
  38. 38.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
  39. 39.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) dark brown words (c) blue words (d) almost nothing
  40. 40.🔍 Which is the odd one out? (a) dissolving salt (b) folding paper (c) melting butter (d) rusting iron

Answer key

  1. True
  2. needed
  3. a balloon
  4. False
  5. yeast
  6. True
  7. we change it
  8. False
  9. True
  10. leaves
  11. a magnet
  12. soap solution
  13. a base
  14. plain water
  15. cannot be undone
  16. not needed
  17. not needed to sprout
  18. False
  19. False
  20. True
  21. no, germs may stay
  22. True
  23. sugar
  24. wet seeds in the dark
  25. saturated
  26. time
  27. True
  28. a magnet
  29. True
  30. we keep it the same
  31. a base
  32. True
  33. False
  34. yeast
  35. True
  36. roots
  37. yeast
  38. False
  39. almost nothing
  40. rusting iron

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