Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 149 · 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.🌱 Is sunlight needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
2. 2.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
3. 3.True or false: sugar water is neutral. (a) False (b) True
4. 4.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) yeast (c) fresh cream (d) a bowl
5. 5.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) reflection (c) germination (d) transpiration
6. 6.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) nothing at all (c) it turns to ice (d) it glows in the dark
7. 7.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a mirror (c) a clear plastic bag (d) yeast
8. 8.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) bright red (b) dark green (c) blue (d) pale yellow
9. 9.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
10. 10.🔍 Which is the odd one out? (a) sugar (b) soil (c) salt (d) warmth
11. 11.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
12. 12.True or false: detergent water is a base. (a) False (b) True
13. 13.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) a comb (d) white paper strips
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) salt water (d) soap solution
15. 15.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a clean glass (d) a balloon
18. 18.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a sieve (b) a mathani (churner) (c) a pressure cooker (d) a rolling pin
19. 19.🔍 Which is the odd one out? (a) sugar (b) soil (c) sunlight (d) air
20. 20.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
22. 22.🫗 Which of these is done by winnowing? (a) mud from water (b) husk from rice grain (c) bad grains from rice (d) tea leaves from tea
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a spoon (d) a battery cell
24. 24.True or false: plugging in the iron is a job a child can do. (a) True (b) False
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) a small bowl (c) a balloon (d) moong seeds
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.True or false: detergent water keeps turmeric yellow. (a) False (b) True
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) fat bits stick together (c) the lid is warm (d) shaking adds salt
33. 33.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) sugar from sugar water (c) small stones from dal (d) gravel from fine sand
34. 34.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
35. 35.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) it is food for yeast (c) to colour it (d) to make it sweet
36. 36.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True
40. 40.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we measure it (c) we keep it the same

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