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Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 289 · 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.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
  2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  3. 3.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) sugar (c) an empty bottle (d) a magnet
  4. 4.True or false: warmth is not needed for a seed to sprout. (a) False (b) True
  5. 5.True or false: moong seeds is not needed for sprouting seeds. (a) True (b) False
  6. 6.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) an empty bottle (c) vinegar (d) a comb
  7. 7.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) True (b) False
  9. 9.True or false: sugar is not needed for the yeast balloon. (a) True (b) False
  10. 10.True or false: make seeds is a job of the stem. (a) True (b) False
  11. 11.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it changes colour (d) it is too big
  12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) False (b) True
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  14. 14.True or false: curd is a base. (a) True (b) False
  15. 15.True or false: a magnet is needed for the yeast balloon. (a) False (b) True
  16. 16.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
  17. 17.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is the one thing we change. (a) False (b) True
  18. 18.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
  19. 19.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny cubes (d) tiny triangles
  20. 20.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
  21. 21.True or false: vinegar is something yeast does not need. (a) True (b) False
  22. 22.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
  23. 23.True or false: sawdust dissolves in water. (a) True (b) False
  24. 24.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) table salt (d) cooking oil
  25. 25.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  26. 26.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) helium (b) oxygen (c) hydrogen (d) carbon dioxide
  27. 27.🪴 Which part of a plant does this job: hold the plant in soil? (a) roots (b) stem (c) leaves (d) flower
  28. 28.True or false: salt is not needed for a seed to sprout. (a) True (b) False
  29. 29.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) cheese (c) ghee (d) still runny cream
  30. 30.True or false: make seeds is a job of the flower. (a) True (b) False
  31. 31.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) sugar (c) a mirror (d) a battery cell
  32. 32.True or false: a rubber band is not needed for the leafy bag test. (a) False (b) True
  33. 33.True or false: a balloon is needed for the yeast balloon. (a) False (b) True
  34. 34.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
  35. 35.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
  36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
  37. 37.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
  38. 38.🫗 How do we separate tea leaves from tea? (a) evaporating (b) filtering (c) handpicking (d) sieving
  39. 39.🌱 Which of these is not needed for a seed to sprout? (a) air (b) warmth (c) water (d) soil
  40. 40.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a cotton bud (c) a battery cell (d) a small bowl

Answer key

  1. a child can do it
  2. an old shirt or apron
  3. an empty bottle
  4. False
  5. False
  6. a comb
  7. not needed
  8. True
  9. False
  10. False
  11. it can block breathing
  12. True
  13. we keep it the same
  14. False
  15. False
  16. safe from small children
  17. False
  18. needed
  19. tiny cubes
  20. reddish-brown
  21. True
  22. salt water
  23. False
  24. cooking oil
  25. not needed
  26. carbon dioxide
  27. roots
  28. True
  29. still runny cream
  30. True
  31. sugar
  32. False
  33. True
  34. needed
  35. True
  36. False
  37. needed
  38. filtering
  39. soil
  40. a battery cell

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