Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 570 · 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.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
2. 2.True or false: carry water upward is a job of the stem. (a) True (b) False
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) lick your fingers (c) skip washing (d) wash your hands
5. 5.True or false: carry water upward is a job of the flower. (a) False (b) True
6. 6.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) it turns to cheese (c) no butter forms (d) more butter forms
7. 7.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
8. 8.True or false: melting butter is a change that cannot be undone. (a) False (b) True
9. 9.True or false: sugar is something yeast needs. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) plain water (b) sugar water (c) baking soda water (d) salt water
11. 11.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
12. 12.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) plugging in the iron (b) dipping the cotton bud (c) ironing the paper (d) cutting the lemon
14. 14.True or false: sugar is needed for the fizzy balloon. (a) False (b) True
15. 15.True or false: melting ice is a change that can be undone. (a) True (b) False
16. 16.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) dipping the cotton bud (c) cutting the lemon (d) putting the iron away
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) cotton or cloth (d) a clean glass
18. 18.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) food stored in the seed (c) the cotton wool (d) the air
20. 20.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
21. 21.True or false: turmeric powder is not needed for the yeast balloon. (a) True (b) False
22. 22.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
23. 23.🧺 Do we need a mirror for the leafy bag test? (a) not needed (b) needed
24. 24.🫧 Which of these is a base? (a) orange juice (b) vinegar (c) detergent water (d) curd
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) False (b) True
26. 26.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
27. 27.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) shake it near your face (d) seal it in a glass jar
28. 28.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) vinegar (c) a balloon (d) a comb
29. 29.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) food colour (d) cooking oil
30. 30.True or false: sawdust does not dissolve in water. (a) True (b) False
31. 31.🪴 Which part of a plant does this job: give out water vapour? (a) leaves (b) roots (c) stem (d) flower
32. 32.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
33. 33.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
34. 34.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a mirror (c) a tray for spills (d) a balloon
35. 35.🔍 Which is the odd one out? (a) dissolving salt (b) freezing water (c) folding paper (d) baking a cake
36. 36.True or false: water is not needed for sprouting seeds. (a) True (b) False
37. 37.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) a huge eruption (d) very little fizzing
38. 38.True or false: warmth is needed for a seed to sprout. (a) False (b) True
39. 39.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
40. 40.True or false: white paper is not needed for the secret lemon message. (a) False (b) True

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