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Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 910 · 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.🧺 Do we need a few days for sprouting seeds? (a) not needed (b) needed
  2. 2.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the ironing time (b) the iron setting (c) the same cotton bud (d) the kind of juice
  3. 3.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
  4. 4.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) sugar (c) a small bottle (d) a magnet
  5. 5.True or false: sugar dissolves in water. (a) False (b) True
  6. 6.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  7. 7.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) soap solution (d) baking soda water
  8. 8.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) False (b) True
  9. 9.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
  11. 11.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) a balloon (d) a clean glass
  12. 12.🍞 Where is yeast used in the kitchen? (a) to wash dishes (b) to make bread rise (c) to clean floors (d) to colour rice
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
  14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we change it (c) we keep it the same
  15. 15.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) curd (d) tamarind water
  16. 16.True or false: yeast is needed for the turmeric test. (a) True (b) False
  17. 17.True or false: putting the iron away is a job a child can do. (a) True (b) False
  18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) time to make butter (c) the cream temperature (d) the same jar
  19. 19.🪴 Which of these is a job of the flower? (a) make seeds (b) hold the plant in soil (c) give out water vapour (d) carry water upward
  20. 20.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) a balloon (d) fresh cream
  21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same glass (c) how clear the water is
  22. 22.🔍 Which is the odd one out? (a) time (b) warm water (c) sugar (d) sunlight
  23. 23.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a funnel or spoon (c) a seed (d) vinegar
  24. 24.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  25. 25.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  26. 26.True or false: bad grains from rice is done by handpicking. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) warm water (b) vinegar (c) a magnet (d) salt
  28. 28.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
  29. 29.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  30. 30.🔍 Which is the odd one out? (a) dipping the cotton bud (b) plugging in the iron (c) writing the message (d) letting the paper dry
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  32. 32.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
  33. 33.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
  34. 34.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
  35. 35.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  36. 36.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  37. 37.True or false: cold water to rinse is needed for making butter. (a) True (b) False
  38. 38.True or false: curd is an acid. (a) True (b) False
  39. 39.True or false: a tray for spills is not needed for the fizzy balloon. (a) False (b) True
  40. 40.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed

Answer key

  1. needed
  2. the kind of juice
  3. we keep it the same
  4. a magnet
  5. True
  6. needed
  7. vinegar
  8. True
  9. stays yellow
  10. an indicator
  11. a clean glass
  12. to make bread rise
  13. we keep it the same
  14. we measure it
  15. baking soda water
  16. False
  17. False
  18. the cream temperature
  19. make seeds
  20. a balloon
  21. the same glass
  22. sunlight
  23. a seed
  24. not needed
  25. not needed
  26. True
  27. warm water
  28. an old shirt or apron
  29. needed
  30. plugging in the iron
  31. False
  32. it will not break
  33. sprouts
  34. needed
  35. False
  36. neutral
  37. True
  38. True
  39. False
  40. needed

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