Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 279 · 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.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
2. 2.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
3. 3.True or false: detergent water is neutral. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a comb (d) a dropper or spoon
6. 6.🧺 Which of these is not needed for the fizzy balloon? (a) a battery cell (b) an empty bottle (c) a balloon (d) vinegar
7. 7.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) browning lemon ink (d) melting butter
8. 8.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) detergent water (d) vinegar
9. 9.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) white paper (c) a balloon (d) turmeric powder
10. 10.True or false: a rubber band is not needed for the leafy bag test. (a) False (b) True
11. 11.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) cooking an egg (d) dissolving salt
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a battery cell (d) a spoon
13. 13.True or false: wet seeds by a window does not sprout. (a) True (b) False
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) yeast (d) a clean glass
15. 15.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) it gets darker (c) writing turns green (d) writing stays faint
16. 16.True or false: vinegar is not needed for the fizzy balloon. (a) True (b) False
17. 17.🫧 Which of these is a base? (a) detergent water (b) vinegar (c) curd (d) sugar water
18. 18.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) a balloon (d) a mirror
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) warm water (d) a balloon
20. 20.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
21. 21.True or false: small stones from dal is done by sieving. (a) False (b) True
22. 22.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) sugar (d) baking soda
23. 23.True or false: sugar is something yeast needs. (a) True (b) False
24. 24.🧈 Which of these is a change that can be undone? (a) freezing water (b) milk turning to curd (c) browning lemon ink (d) baking a cake
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) sun or shade (c) the size of the plant
26. 26.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) vinegar (d) plain water
27. 27.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
28. 28.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
29. 29.True or false: cutting the lemon is a job a child can do. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) soap solution
31. 31.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
33. 33.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) vinegar (d) a few hours
36. 36.True or false: orange juice is neutral. (a) True (b) False
37. 37.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) False (b) True
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same paper (b) the ironing time (c) the kind of juice (d) how dark the writing is

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