Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 801 · 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 an acid? (a) soap solution (b) baking soda water (c) sugar water (d) vinegar
2. 2.🧺 Which of these is not needed for the yeast balloon? (a) turmeric powder (b) warm water (c) a balloon (d) sugar
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) how hard we shake (c) the same jar (d) the cream temperature
6. 6.True or false: bad grains from rice is done by evaporating. (a) False (b) True
7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) a balloon (c) warm water (d) a small bottle
8. 8.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
9. 9.True or false: hold up the leaves is a job of the roots. (a) True (b) False
10. 10.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) detergent water (d) salt water
12. 12.🔍 Which is the odd one out? (a) letting the paper dry (b) ironing the paper (c) cutting the lemon (d) plugging in the iron
13. 13.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a balloon (b) water (c) a few days (d) moong seeds
14. 14.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a battery cell (c) an adult with an iron (d) a cotton bud
15. 15.True or false: a magnet is not needed for making butter. (a) False (b) True
16. 16.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) a magnet (c) moong seeds (d) cotton wool
17. 17.🔮 Predict: the adult irons for only one second. What happens? (a) writing stays faint (b) writing turns green (c) the paper floats (d) it gets darker
18. 18.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) False (b) True
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
21. 21.True or false: turmeric powder is needed for the leafy bag test. (a) False (b) True
22. 22.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
23. 23.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on wet cotton (c) wet seeds in the dark (d) seeds on dry cotton
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a few hours (c) vinegar (d) sunlight
26. 26.🫧 Which of these is a base? (a) lemon juice (b) detergent water (c) orange juice (d) tamarind water
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) yeast
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) sunny or shady place (c) the amount of water (d) the kind of salt
29. 29.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) vinegar is hot (c) gas is made inside (d) outside air gets in
30. 30.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) a battery cell (c) a magnet (d) a small bowl
31. 31.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a few hours (c) a clear plastic bag (d) a magnet
32. 32.🛟 What should you do after touching soil or seeds? (a) wash your hands (b) skip washing (c) rub your eyes (d) lick your fingers
33. 33.🔍 Which is the odd one out? (a) letting the paper dry (b) dipping the cotton bud (c) writing the message (d) putting the iron away
34. 34.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a funnel (c) a magnet (d) yeast
36. 36.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a mirror (c) sugar (d) vinegar
37. 37.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) it grows bigger (d) there is no change
38. 38.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it turns pink (c) it is much faster (d) it makes salt
39. 39.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) a magnet (d) a potted plant
40. 40.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rub it hard (d) rinse with clean water

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