Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 300 · 40 questions

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.

1. 1.True or false: seeds on wet cotton does not sprout. (a) True (b) False
2. 2.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) water (d) a dropper or spoon
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) rusting iron (d) dissolving salt
5. 5.True or false: turmeric powder is needed for the secret lemon message. (a) False (b) True
6. 6.True or false: air is needed for a seed to sprout. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
8. 8.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) yeast (c) an adult with an iron (d) a magnet
9. 9.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
10. 10.True or false: a magnet is something yeast needs. (a) True (b) False
11. 11.🧺 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) a balloon (d) lemon juice
12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
13. 13.True or false: cold water to rinse is not needed for making butter. (a) True (b) False
14. 14.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) vinegar (d) detergent water
15. 15.🔍 Which is the odd one out? (a) curd (b) orange juice (c) lemon juice (d) plain water
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the same funnel
17. 17.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
18. 18.🧺 Which of these is needed for making butter? (a) fresh cream (b) a balloon (c) a magnet (d) yeast
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) cotton or cloth (d) a funnel
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
21. 21.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) stem (c) leaves (d) roots
22. 22.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
23. 23.🧈 What is the watery liquid left after the butter forms? (a) buttermilk (b) oil (c) honey (d) vinegar
24. 24.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) dry yeast (c) a balloon (d) a mirror
25. 25.🧺 Do we need an empty bottle for the fizzy balloon? (a) needed (b) not needed
26. 26.🍋 Which of these steps is a job for an adult? (a) ironing the paper (b) letting the paper dry (c) reading the message (d) dipping the cotton bud
27. 27.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
28. 28.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
29. 29.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it turns to sugar (c) the yeast is killed (d) it grows faster
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) size of the balloon (c) spoons of baking soda (d) the kind of balloon
31. 31.🫧 Which of these is an acid? (a) lemon juice (b) soap solution (c) plain water (d) baking soda water
32. 32.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) turmeric powder (c) sugar (d) a small bottle
33. 33.True or false: yeast is not needed for the turmeric test. (a) False (b) True
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) True (b) False
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the same bottles
36. 36.🛟 Why must the jar lid be screwed on tightly? (a) so cream does not spill (b) so it turns yellow (c) so it gets hot (d) so air gets out
37. 37.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a pressure cooker (b) a rolling pin (c) a sieve (d) a mathani (churner)
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) water (c) a mirror (d) yeast
40. 40.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bran from wheat flour (c) chaff from wheat grain (d) sugar from sugar water

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