Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 440 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a dropper or spoon (d) a magnet
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) turmeric powder (d) yeast
5. 5.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) water (c) a balloon (d) a few days
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
7. 7.True or false: salt is something yeast needs. (a) True (b) False
8. 8.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.True or false: ironing the paper is a job for an adult. (a) True (b) False
10. 10.True or false: baking a cake is a change that can be undone. (a) True (b) False
11. 11.⚖️ 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
12. 12.True or false: yeast is needed for making butter. (a) False (b) True
13. 13.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
14. 14.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a magnet (c) cold water to rinse (d) fresh cream
15. 15.True or false: cooking oil does not dissolve in water. (a) True (b) False
16. 16.🧺 Which of these is not needed for the yeast balloon? (a) turmeric powder (b) dry yeast (c) a balloon (d) warm water
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.True or false: soap solution is an acid. (a) True (b) False
19. 19.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) turmeric powder (c) a balloon (d) warm water
20. 20.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a clear plastic bag (c) a mirror (d) a few hours
21. 21.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a few days (c) a small bowl (d) yeast
22. 22.🌱 Which of these is needed for a seed to sprout? (a) salt (b) soil (c) sunlight (d) water
23. 23.🔮 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
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a balloon (d) a clean glass
25. 25.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it flowers more (c) it wilts and droops (d) it grows faster
26. 26.True or false: wet seeds in the dark does not sprout. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) cutting the lemon (b) letting the paper dry (c) writing the message (d) dipping the cotton bud
28. 28.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) shake it near your face (d) seal it in a glass jar
29. 29.True or false: turmeric powder is needed for the yeast balloon. (a) False (b) True
30. 30.True or false: hold up the leaves is a job of the stem. (a) True (b) False
31. 31.True or false: husk from rice grain is done by filtering. (a) False (b) True
32. 32.True or false: air is needed for a seed to sprout. (a) False (b) True
33. 33.True or false: a magnet is not needed for the yeast balloon. (a) False (b) True
34. 34.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a timer (d) turmeric powder
35. 35.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) sugar (c) a small bottle (d) a comb
39. 39.True or false: a comb is needed for the yeast balloon. (a) False (b) True
40. 40.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids