Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 876 · 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 yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.True or false: a battery cell is not needed for sprouting seeds. (a) False (b) True
4. 4.True or false: a jar with a tight lid is needed for making butter. (a) True (b) False
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the ironing time (b) the same paper (c) the iron setting (d) how dark the writing is
6. 6.True or false: water is not needed for the turmeric test. (a) False (b) True
7. 7.🫗 How do we separate bran from wheat flour? (a) filtering (b) evaporating (c) handpicking (d) sieving
8. 8.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
9. 9.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a mirror (c) a magnet (d) a tray for spills
10. 10.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) yeast (c) a bowl (d) a timer
11. 11.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) vinegar (d) warm water
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🧈 What is the watery liquid left after the butter forms? (a) vinegar (b) honey (c) oil (d) buttermilk
14. 14.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) leaves (c) stem (d) flower
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) sunlight (c) vinegar (d) a few hours
16. 16.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
17. 17.True or false: cold water to rinse is needed for making butter. (a) True (b) False
18. 18.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
19. 19.True or false: sawdust dissolves in water. (a) True (b) False
20. 20.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) more butter forms (c) it turns to cheese (d) it turns blue
21. 21.🫧 Which of these is an acid? (a) curd (b) sugar water (c) plain water (d) detergent water
22. 22.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds in the freezer (c) wet seeds in the dark (d) seeds on dry cotton
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is what we measure. (a) False (b) True
25. 25.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
26. 26.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) salt from sea water (d) bran from wheat flour
27. 27.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a few days (c) water (d) a balloon
28. 28.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🧺 Which of these is not needed for sprouting seeds? (a) yeast (b) a small bowl (c) moong seeds (d) water
30. 30.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
31. 31.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
32. 32.True or false: folding paper is a change that can be undone. (a) True (b) False
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of sugar (b) size of the balloon (c) the same bottles (d) the amount of yeast
34. 34.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a magnet (c) vinegar (d) a potted plant
35. 35.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) leaves (c) roots (d) flower
36. 36.⚖️ 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) amount of water drops (c) the time we wait
37. 37.True or false: a magnet is not needed for the fizzy balloon. (a) False (b) True
38. 38.🧈 Which of these is a change that can be undone? (a) baking a cake (b) freezing water (c) browning lemon ink (d) rusting iron
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) True (b) False
40. 40.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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