Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 837 · 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.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) baking soda (c) vinegar (d) a tray for spills
2. 2.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) soil (c) sunlight (d) salt
3. 3.True or false: boiled seeds sprouts in a few days. (a) True (b) False
4. 4.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bad grains from rice (c) chaff from wheat grain (d) gravel from fine sand
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is the one thing we change. (a) False (b) True
6. 6.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) muddy water (d) sand and pebbles
9. 9.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
10. 10.True or false: dissolving salt is a change that can be undone. (a) False (b) True
11. 11.🌱 Which of these does not sprout? (a) boiled seeds (b) seeds on wet cotton (c) wet seeds in the dark (d) wet seeds by a window
12. 12.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) dissolving salt (c) melting butter (d) freezing water
13. 13.🫧 Which of these is a base? (a) tamarind water (b) curd (c) detergent water (d) lemon juice
14. 14.🔍 Which is the odd one out? (a) sugar (b) a magnet (c) sunlight (d) salt
15. 15.True or false: moong seeds is not needed for sprouting seeds. (a) False (b) True
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the kind of salt (b) sunny or shady place (c) days to see crystals (d) the amount of salt
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) a funnel or spoon (d) a balloon
19. 19.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
20. 20.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
21. 21.🫗 How do we separate tea leaves from tea? (a) winnowing (b) sieving (c) handpicking (d) filtering
22. 22.True or false: a jar with a tight lid is not needed for making butter. (a) False (b) True
23. 23.True or false: a magnet is needed for the leafy bag test. (a) True (b) False
24. 24.True or false: dipping the cotton bud is a job a child can do. (a) False (b) True
25. 25.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the number of seeds (b) the same bowls (c) wet or dry cotton (d) the kind of seeds
26. 26.🔍 Which is the odd one out? (a) salt water (b) orange juice (c) vinegar (d) tamarind water
27. 27.⚖️ 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
28. 28.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) no, never (c) they turn to stones (d) they melt
29. 29.🔍 Which is the odd one out? (a) letting the paper dry (b) dipping the cotton bud (c) writing the message (d) plugging in the iron
30. 30.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) False (b) True
31. 31.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it turns blue (d) it wilts and droops
32. 32.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) sieving (d) filtering
33. 33.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
34. 34.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) baking a cake (c) melting butter (d) folding paper
35. 35.True or false: a battery cell is needed for making butter. (a) True (b) False
36. 36.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
38. 38.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a balloon (c) a battery cell (d) a magnet
39. 39.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) freezing water (d) browning lemon ink
40. 40.True or false: fresh cream is not needed for making butter. (a) False (b) True

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