Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 973 · 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.True or false: orange juice is neutral. (a) False (b) True
2. 2.🍞 Which of these is something yeast needs? (a) a magnet (b) time (c) vinegar (d) sunlight
3. 3.True or false: sand does not dissolve in water. (a) True (b) False
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
5. 5.True or false: baking soda does not dissolve in water. (a) True (b) False
6. 6.🛟 After the yeast experiment, what should you do with the mixture? (a) pour it down the sink (b) put it in your mouth (c) keep it for a month (d) throw it at a wall
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the cream temperature (c) how hard we shake
8. 8.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) fresh cream (c) a mirror (d) a timer
9. 9.True or false: a balloon is needed for the turmeric test. (a) False (b) True
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the plant (c) amount of water drops
11. 11.True or false: sugar is something yeast does not need. (a) False (b) True
12. 12.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
13. 13.🔍 What do you see after shaking cream in a jar for a long time? (a) sugar crystals (b) lumps of butter (c) bubbles of gas (d) clear water only
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) soap solution (d) a mirror
15. 15.🫧 Which of these is neutral? (a) orange juice (b) vinegar (c) soap solution (d) plain water
16. 16.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) shake it near your face (d) keep it away from eyes
17. 17.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
18. 18.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) False (b) True
19. 19.True or false: sugar is needed for the yeast balloon. (a) True (b) False
20. 20.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
21. 21.🔍 Which is the odd one out? (a) sunlight (b) salt (c) vinegar (d) warm water
22. 22.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
23. 23.🫗 How do we separate bad grains from rice? (a) sieving (b) filtering (c) evaporating (d) handpicking
24. 24.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
27. 27.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
28. 28.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
29. 29.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
30. 30.True or false: moong seeds is needed for sprouting seeds. (a) True (b) False
31. 31.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) the yeast is killed (c) it grows faster (d) it turns to sugar
32. 32.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a battery cell (d) soap solution
33. 33.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so it gets hot (c) so cream does not spill (d) so air gets out
34. 34.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
35. 35.True or false: salt from sea water is done by winnowing. (a) True (b) False
36. 36.🧺 Which of these is not needed for making butter? (a) a balloon (b) cold water to rinse (c) fresh cream (d) a timer
37. 37.True or false: cotton wool is needed for sprouting seeds. (a) True (b) False
38. 38.🧺 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 battery cell (d) a few hours
39. 39.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
40. 40.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve

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