Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 940 · 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.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a magnet (c) warm water (d) turmeric powder
3. 3.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) a mirror (c) turmeric powder (d) white paper
4. 4.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) a small bowl (c) a mirror (d) turmeric powder
5. 5.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) True (b) False
8. 8.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) False (b) True
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) detergent water (d) salt water
10. 10.🔍 Which is the odd one out? (a) melting butter (b) cooking an egg (c) freezing water (d) dissolving salt
11. 11.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they turn to stones (c) no, never (d) they melt
12. 12.True or false: a comb is needed for the fizzy balloon. (a) True (b) False
13. 13.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it changes colour (c) it gets wet (d) it is too big
14. 14.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.🔍 Which is the odd one out? (a) warmth (b) air (c) water (d) sugar
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) water
19. 19.🔍 Which is the odd one out? (a) writing the message (b) reading the message (c) plugging in the iron (d) letting the paper dry
20. 20.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
21. 21.True or false: a comb is not needed for the yeast balloon. (a) True (b) False
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
23. 23.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) baking soda (c) vinegar (d) a tray for spills
24. 24.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
25. 25.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
26. 26.🫧 Which of these is an acid? (a) sugar water (b) curd (c) detergent water (d) baking soda water
27. 27.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
28. 28.True or false: boiled seeds sprouts in a few days. (a) False (b) True
29. 29.🛟 What should you do after touching soil or seeds? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
30. 30.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
31. 31.🍞 Which of these is something yeast does not need? (a) time (b) a magnet (c) warm water (d) sugar
32. 32.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the kind of seeds (b) wet or dry cotton (c) the same place (d) how many seeds sprout
33. 33.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
34. 34.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
35. 35.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a magnet (c) moong seeds (d) cotton wool
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the same dish (c) days to see crystals (d) the amount of water
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of water (b) days to see crystals (c) sunny or shady place
38. 38.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) blue (b) pale yellow (c) bright red (d) dark green
39. 39.🪴 Which of these is a job of the stem? (a) carry water upward (b) give out water vapour (c) hold the plant in soil (d) make food in sunlight
40. 40.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves

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