Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 89 · 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.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a clear plastic bag (c) a mirror (d) vinegar
2. 2.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) a magnet (d) a tray for spills
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) soap solution (d) salt water
4. 4.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
6. 6.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) an empty bottle (c) baking soda (d) a tray for spills
9. 9.True or false: reading the message is a job for an adult. (a) True (b) False
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
11. 11.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) True (b) False
13. 13.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
14. 14.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
16. 16.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
17. 17.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a magnet (d) a piece of string
19. 19.True or false: turmeric powder is needed for the secret lemon message. (a) True (b) False
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a rubber band (c) a clear plastic bag (d) yeast
21. 21.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a pressure cooker (b) a sieve (c) a mathani (churner) (d) a rolling pin
22. 22.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
23. 23.True or false: food colour does not dissolve in water. (a) True (b) False
24. 24.📘 What is yeast? (a) a tiny living fungus (b) a kind of salt (c) a kind of sugar (d) a kind of stone
25. 25.🌱 Which of these is needed for a seed to sprout? (a) air (b) sunlight (c) soil (d) salt
26. 26.🔍 Which is the odd one out? (a) sugar (b) sunlight (c) air (d) salt
27. 27.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it takes much longer (c) it makes salt (d) it turns pink
28. 28.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
29. 29.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) a timer (c) yeast (d) fresh cream
31. 31.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
33. 33.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) yes, if cooled (c) yes, in the dark (d) no, it stays brown
34. 34.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
35. 35.🍋 Secret message: who does this step — reading the message? (a) a child can do it (b) an adult does it
36. 36.True or false: a comb is not needed for the fizzy balloon. (a) True (b) False
37. 37.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
38. 38.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) warm water (c) a comb (d) a paper clip
39. 39.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
40. 40.True or false: take in water from soil is a job of the stem. (a) True (b) False

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