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Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 880 · 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: vinegar is neutral. (a) False (b) True
  2. 2.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  3. 3.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
  4. 4.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) warm, not hot (d) very salty
  5. 5.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  6. 6.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.🧺 Do we need turmeric powder for making butter? (a) not needed (b) needed
  8. 8.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
  9. 9.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  10. 10.🌱 What comes out of a moong seed first when it sprouts? (a) a flower (b) a tiny root (c) a thorn (d) a fruit
  11. 11.🧺 Do we need a balloon for making butter? (a) not needed (b) needed
  12. 12.True or false: sugar is something yeast does not need. (a) True (b) False
  13. 13.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
  14. 14.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) an adult with an iron (c) a mirror (d) a cotton bud
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) turmeric powder (d) white paper strips
  16. 16.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a dropper or spoon (d) a comb
  17. 17.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.True or false: a bowl is needed for making butter. (a) False (b) True
  19. 19.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rub it hard (c) rinse with clean water (d) ignore it
  20. 20.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) no, nothing changes (c) it is only dissolving (d) yes, a new gas forms
  21. 21.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) cutting the lemon (c) putting the iron away (d) ironing the paper
  22. 22.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) yeast (c) a clear plastic bag (d) a mirror
  23. 23.🍋 Secret message: who does this step — cutting the lemon? (a) a child can do it (b) an adult does it
  24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) cotton wool (c) water (d) turmeric powder
  25. 25.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is what we measure. (a) False (b) True
  27. 27.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  28. 28.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) sunlight (d) vinegar
  29. 29.True or false: seeds on wet cotton does not sprout. (a) False (b) True
  30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of salt (b) the same dish (c) the amount of water (d) sunny or shady place
  31. 31.🫧 Which of these is a base? (a) curd (b) vinegar (c) orange juice (d) detergent water
  32. 32.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
  33. 33.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) how dark the writing is (b) the kind of juice (c) the same paper (d) the same cotton bud
  34. 34.🧺 Which of these is needed for the secret lemon message? (a) a cotton bud (b) a magnet (c) a mirror (d) yeast
  35. 35.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) hot (d) muddier
  36. 36.True or false: make seeds is a job of the flower. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) glucose powder
  38. 38.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) no, it stays brown (c) yes, in the dark (d) yes, if cooled
  39. 39.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
  40. 40.🧺 Do we need a timer for making butter? (a) needed (b) not needed

Answer key

  1. False
  2. needed
  3. True
  4. warm, not hot
  5. False
  6. dissolves in water
  7. not needed
  8. needed
  9. needed
  10. a tiny root
  11. not needed
  12. False
  13. needed to sprout
  14. a mirror
  15. a balloon
  16. a dropper or spoon
  17. dissolves in water
  18. True
  19. rinse with clean water
  20. yes, a new gas forms
  21. dipping the cotton bud
  22. a clear plastic bag
  23. an adult does it
  24. turmeric powder
  25. can be undone
  26. False
  27. needed
  28. vinegar
  29. False
  30. sunny or shady place
  31. detergent water
  32. needed to sprout
  33. how dark the writing is
  34. a cotton bud
  35. clearer
  36. True
  37. glucose powder
  38. no, it stays brown
  39. needed
  40. needed

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