Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 176 · 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 done by winnowing? (a) tea leaves from tea (b) gravel from fine sand (c) bad grains from rice (d) husk from rice grain
2. 2.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
3. 3.True or false: table salt dissolves in water. (a) False (b) True
4. 4.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a battery cell (d) warm water
5. 5.🧈 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
6. 6.🧺 Which of these is not needed for the secret lemon message? (a) yeast (b) lemon juice (c) white paper (d) a small bowl
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) a magnet
8. 8.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
9. 9.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.True or false: take in water from soil is a job of the roots. (a) False (b) True
12. 12.🛟 The water for the yeast should be ___. (a) warm, not hot (b) very salty (c) boiling hot (d) ice cold
13. 13.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
14. 14.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a dropper or spoon (d) a magnet
15. 15.True or false: a small bowl is not needed for the secret lemon message. (a) True (b) False
16. 16.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) water (d) a mirror
17. 17.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
18. 18.True or false: a seed is needed for the fizzy balloon. (a) False (b) True
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) clearer (d) salty
20. 20.True or false: salt water is neutral. (a) True (b) False
21. 21.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds on dry cotton (c) seeds in the freezer (d) seeds on wet cotton
22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
23. 23.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a mirror (b) cold water to rinse (c) a bowl (d) fresh cream
24. 24.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a mirror (c) dry yeast (d) a magnet
25. 25.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) much less water (d) it fills with soil
26. 26.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) yeast (d) a piece of string
28. 28.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) how many seeds sprout (b) the kind of seeds (c) wet or dry cotton (d) the same bowls
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) yeast (c) a clean glass (d) muddy water
30. 30.True or false: lemon juice is not needed for the secret lemon message. (a) False (b) True
31. 31.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
34. 34.🔍 Which is the odd one out? (a) time (b) sugar (c) sunlight (d) warm water
35. 35.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so cream does not spill (c) so air gets out (d) so it gets hot
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a battery cell (b) a balloon (c) baking soda (d) a tray for spills
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) the paper floats (c) it gets darker (d) writing stays faint
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is kept the same. (a) True (b) False
40. 40.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we keep it the same (c) we measure it

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