Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 614 · 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.True or false: seeds on wet cotton does not sprout. (a) True (b) False
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
3. 3.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the salt (d) the mud
5. 5.True or false: warm water is not needed for the yeast balloon. (a) False (b) True
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
7. 7.🌱 Which of these is not needed for a seed to sprout? (a) water (b) warmth (c) air (d) sunlight
8. 8.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) steam (c) carbon dioxide gas (d) smoke
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
11. 11.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the gas froze (c) an ingredient ran out (d) the bottle got tired
13. 13.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
14. 14.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) True (b) False
15. 15.True or false: vinegar is something yeast needs. (a) False (b) True
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the liquid we test
17. 17.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a balloon (c) a bowl (d) a timer
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
19. 19.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
21. 21.True or false: turmeric powder is needed for making butter. (a) True (b) False
22. 22.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) warmth (b) water (c) air (d) soil
24. 24.True or false: sunlight is needed for a seed to sprout. (a) True (b) False
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of yeast (c) the water temperature (d) the amount of sugar
26. 26.🫗 Which of these is done by filtering? (a) small stones from dal (b) bad grains from rice (c) mud from water (d) husk from rice grain
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
28. 28.🍞 Which of these is something yeast does not need? (a) sugar (b) warm water (c) time (d) a magnet
29. 29.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
30. 30.⚖️ 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 funnel (b) the amount poured (c) how clear the water is (d) the filter material
31. 31.True or false: ironing the paper is a job a child can do. (a) True (b) False
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a balloon (d) a funnel
33. 33.🫗 Which of these is done by evaporating? (a) salt from sea water (b) mud from water (c) husk from rice grain (d) small stones from dal
34. 34.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a balloon (d) a magnet
35. 35.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
36. 36.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
37. 37.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) white paper strips (d) a battery cell
39. 39.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) sugar (c) soil (d) salt
40. 40.True or false: sunlight is needed for the leafy bag test. (a) False (b) True

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