Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 148 · 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.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) a balloon (c) an adult with an iron (d) turmeric powder
3. 3.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) fresh cream (d) turmeric powder
4. 4.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
5. 5.🌱 Will these sprout: seeds in the freezer? (a) does not sprout (b) sprouts
6. 6.🎈 Why does the balloon blow up? (a) vinegar is hot (b) gas is made inside (c) the bottle shrinks (d) outside air gets in
7. 7.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the lid is warm (c) the jar adds butter (d) shaking adds salt
8. 8.🔮 Predict: you stop shaking after only one minute. What do you have? (a) cheese (b) butter lumps (c) still runny cream (d) ghee
9. 9.🔍 Which is the odd one out? (a) ironing the paper (b) cutting the lemon (c) plugging in the iron (d) dipping the cotton bud
10. 10.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a mirror (d) a potted plant
11. 11.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) there is no change (d) it grows bigger
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
14. 14.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) gently, not too tight (c) with a hot glue gun (d) with sharp wire
15. 15.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
16. 16.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) tea leaves from tea (c) bran from wheat flour (d) bad grains from rice
17. 17.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a timer (c) a bowl (d) a balloon
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a battery cell (c) a rubber band (d) a potted plant
21. 21.🔍 Which is the odd one out? (a) air (b) warmth (c) soil (d) water
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
23. 23.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
24. 24.True or false: a mirror is needed for sprouting seeds. (a) True (b) False
25. 25.🧺 Do we need cold water to rinse for making butter? (a) not needed (b) needed
26. 26.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
28. 28.True or false: a bowl is not needed for making butter. (a) False (b) True
29. 29.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) the same place (c) how many seeds sprout
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the ironing time (b) how dark the writing is (c) the iron setting (d) the kind of juice
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a magnet (c) a tray for spills (d) baking soda
32. 32.🧺 Do we need a timer for making butter? (a) needed (b) not needed
33. 33.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) the yeast is killed (b) it turns to sugar (c) it grows faster (d) it glows
34. 34.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) wet or dry cotton (c) how many seeds sprout (d) the number of seeds
35. 35.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) sugar (d) a mirror
36. 36.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
37. 37.🧺 Which of these is needed for the yeast balloon? (a) a small bottle (b) a mirror (c) a magnet (d) turmeric powder
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sawdust (d) glucose powder
40. 40.True or false: a magnet is not needed for the fizzy balloon. (a) False (b) True

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