Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 466 · 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 not needed for sprouting seeds? (a) a few days (b) cotton wool (c) a battery cell (d) a small bowl
2. 2.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a battery cell (c) yeast (d) a rubber band
4. 4.True or false: a magnet is something yeast does not need. (a) True (b) False
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the cream temperature (b) the same jar (c) how hard we shake (d) time to make butter
6. 6.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
7. 7.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
8. 8.True or false: a small bowl is not needed for sprouting seeds. (a) False (b) True
9. 9.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
10. 10.🧂 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) baking soda (d) cooking oil
11. 11.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
12. 12.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a tray for spills (c) baking soda (d) a comb
14. 14.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so cream does not spill (c) so air gets out (d) so it turns yellow
15. 15.🫧 Which of these is a base? (a) orange juice (b) tamarind water (c) curd (d) detergent water
16. 16.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
17. 17.True or false: a magnet is something yeast needs. (a) True (b) False
18. 18.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) mud from water (c) bad grains from rice (d) bran from wheat flour
19. 19.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a funnel or spoon (c) a balloon (d) a magnet
20. 20.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it can block breathing (c) it gets wet (d) it changes colour
21. 21.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) cold water to rinse (c) a bowl (d) yeast
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the time we wait (b) sun or shade (c) amount of water drops (d) the kind of plant
24. 24.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) sunlight (c) a potted plant (d) yeast
25. 25.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a pressure cooker (b) a mathani (churner) (c) a rolling pin (d) a sieve
26. 26.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) plain water (d) orange juice
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a battery cell (d) warm water
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) a funnel (d) sand and pebbles
30. 30.🧺 Do we need a magnet for the secret lemon message? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a few hours (c) a clear plastic bag (d) turmeric powder
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
34. 34.🍋 Which of these steps is a job for an adult? (a) writing the message (b) cutting the lemon (c) dipping the cotton bud (d) reading the message
35. 35.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
36. 36.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) True (b) False
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) a spoon (d) a piece of string
38. 38.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
39. 39.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
40. 40.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) the balloon is bigger (c) it shrinks to nothing (d) it turns to bread

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