Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 832 · 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.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
2. 2.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
3. 3.True or false: boiled seeds does not sprout. (a) True (b) False
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
5. 5.🫧 Which of these is an acid? (a) salt water (b) plain water (c) baking soda water (d) lemon juice
6. 6.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) True (b) False
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
9. 9.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) a cotton bud (c) a balloon (d) lemon juice
10. 10.True or false: lemon juice is not needed for the secret lemon message. (a) True (b) False
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
12. 12.🌱 Why do the seeds on dry cotton not sprout? (a) they have no soil (b) they have no salt (c) they are too wet (d) they have no water
13. 13.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the kind of seeds (b) how many seeds sprout (c) wet or dry cotton
14. 14.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a magnet (c) a comb (d) a balloon
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) lemon juice (d) salt water
16. 16.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) a paper clip (d) warm water
17. 17.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) moong seeds (c) cotton wool (d) a small bowl
18. 18.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) air (c) soil (d) salt
19. 19.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it grows very little (c) it bursts at once (d) it turns yellow
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.True or false: table salt does not dissolve in water. (a) True (b) False
22. 22.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) seeds in the freezer (d) wet seeds in the dark
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the same jar (b) time to make butter (c) the cream temperature
24. 24.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) soap solution (d) lemon juice
26. 26.🫗 How do we separate salt from sea water? (a) handpicking (b) winnowing (c) evaporating (d) sieving
27. 27.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
28. 28.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a balloon (b) cotton wool (c) a small bowl (d) a few days
30. 30.True or false: detergent water keeps turmeric yellow. (a) False (b) True
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
32. 32.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
33. 33.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
34. 34.True or false: vinegar is something yeast needs. (a) True (b) False
35. 35.True or false: yeast is needed for the secret lemon message. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) tamarind water (b) orange juice (c) soap solution (d) vinegar
37. 37.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) yeast (b) moong seeds (c) a small bowl (d) a few days
38. 38.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: wet seeds in the dark does not sprout. (a) True (b) False

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