Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 601 · 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) yeast (d) a small bowl
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the amount poured (c) the filter material (d) how clear the water is
3. 3.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
4. 4.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
5. 5.🔍 Which is the odd one out? (a) warmth (b) sugar (c) air (d) water
6. 6.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) cheese (c) ghee (d) butter lumps
7. 7.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
8. 8.True or false: tamarind water is neutral. (a) False (b) True
9. 9.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a comb (c) baking soda (d) vinegar
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the colour we see
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) baking soda water (c) tamarind water (d) lemon juice
12. 12.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is what we measure. (a) True (b) False
13. 13.🫧 Which of these is a base? (a) plain water (b) curd (c) soap solution (d) vinegar
14. 14.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
15. 15.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) True (b) False
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🔍 What do you see after shaking cream in a jar for a long time? (a) bubbles of gas (b) sugar crystals (c) clear water only (d) lumps of butter
18. 18.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
19. 19.True or false: yeast is needed for the leafy bag test. (a) True (b) False
20. 20.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🔍 Which is the odd one out? (a) salt water (b) plain water (c) sugar water (d) orange juice
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the liquid we test
23. 23.🔮 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) it fills with soil (d) much less water
24. 24.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
25. 25.🪴 Which of these is a job of the flower? (a) carry water upward (b) make food in sunlight (c) take in water from soil (d) make seeds
26. 26.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the bottle got tired (c) an ingredient ran out (d) the balloon got cold
27. 27.🔍 Which is the odd one out? (a) salt (b) time (c) sugar (d) warm water
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
29. 29.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) turmeric powder (d) warm water
31. 31.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a balloon (c) a battery cell (d) a cotton bud
32. 32.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) lemon juice (c) a cotton bud (d) a battery cell
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.🧺 Do we need a balloon for making butter? (a) not needed (b) needed
36. 36.🪴 Which part of a plant does this job: carry water upward? (a) stem (b) roots (c) flower (d) leaves
37. 37.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) sugar (d) glucose powder
38. 38.True or false: warmth is needed for a seed to sprout. (a) False (b) True
39. 39.🧺 Do we need a magnet for sprouting seeds? (a) needed (b) not needed
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid

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