Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 687 · 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.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: hold the plant in soil is a job of the roots. (a) True (b) False
3. 3.True or false: fresh cream is needed for making butter. (a) True (b) False
4. 4.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
5. 5.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) tamarind water (d) plain water
7. 7.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) water evaporates (d) the dish melts
8. 8.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) False (b) True
9. 9.🫗 Which of these is done by filtering? (a) salt from sea water (b) tea leaves from tea (c) gravel from fine sand (d) bran from wheat flour
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a mirror (d) turmeric powder
11. 11.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
12. 12.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) a magnet (d) turmeric powder
13. 13.🧺 Do we need cold water to rinse for making butter? (a) not needed (b) needed
14. 14.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
15. 15.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) dark green (b) pale yellow (c) bright red (d) blue
16. 16.🔍 Which is the odd one out? (a) water (b) sunlight (c) air (d) warmth
17. 17.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a battery cell (c) a few hours (d) vinegar
18. 18.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
19. 19.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.🧺 Which of these is needed for making butter? (a) a timer (b) a magnet (c) yeast (d) a balloon
21. 21.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
22. 22.True or false: tamarind water is an acid. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) curd
24. 24.🫧 Which of these is a base? (a) vinegar (b) sugar water (c) salt water (d) detergent water
25. 25.🔮 Predict: the adult irons for only one second. What happens? (a) writing stays faint (b) it gets darker (c) writing turns green (d) the paper floats
26. 26.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) cooking an egg (d) melting butter
30. 30.🧺 Which of these is not needed for sprouting seeds? (a) a balloon (b) a few days (c) moong seeds (d) water
31. 31.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) water (c) salt (d) soil
32. 32.True or false: yeast is needed for growing salt crystals. (a) False (b) True
33. 33.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
34. 34.🫗 Which of these is done by handpicking? (a) salt from sea water (b) small stones from dal (c) bran from wheat flour (d) sugar from sugar water
35. 35.True or false: yeast is not needed for the secret lemon message. (a) True (b) False
36. 36.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a potted plant (c) a rubber band (d) a magnet
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the same bottle
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) True (b) False
40. 40.True or false: sawdust does not dissolve in water. (a) True (b) False

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