Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 518 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
2. 2.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bran from wheat flour (c) small stones from dal (d) husk from rice grain
3. 3.🪴 Which of these is a job of the flower? (a) take in water from soil (b) hold the plant in soil (c) make seeds (d) give out water vapour
4. 4.True or false: gravel from fine sand is done by sieving. (a) False (b) True
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is what we measure. (a) True (b) False
6. 6.True or false: yeast is needed for the muddy water filter. (a) True (b) False
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a magnet (d) soap solution
8. 8.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.True or false: glucose powder does not dissolve in water. (a) True (b) False
10. 10.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
11. 11.True or false: sugar dissolves in water. (a) True (b) False
12. 12.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns to cheese (b) it turns blue (c) more butter forms (d) no butter forms
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
14. 14.🧺 Which of these is not needed for the leafy bag test? (a) a magnet (b) a potted plant (c) a clear plastic bag (d) a rubber band
15. 15.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) milk turning to curd (b) cooking an egg (c) rusting iron (d) melting butter
18. 18.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the time we wait (b) the same kind of bag (c) amount of water drops (d) the kind of plant
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a shallow dish (d) salt
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) plain water (c) baking soda water (d) sugar water
21. 21.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a mirror (b) a jar with a tight lid (c) a bowl (d) fresh cream
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🔍 Which is the odd one out? (a) sunlight (b) salt (c) time (d) a magnet
25. 25.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
26. 26.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it wilts and droops (d) it flowers more
27. 27.True or false: salt water is a base. (a) False (b) True
28. 28.True or false: plain water keeps turmeric yellow. (a) False (b) True
29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the same bottles (c) the water temperature
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) False (b) True
33. 33.True or false: curd is an acid. (a) True (b) False
34. 34.True or false: a mirror is not needed for the leafy bag test. (a) True (b) False
35. 35.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) a rubber band (c) a potted plant (d) a few hours
36. 36.🔍 Which is the odd one out? (a) melting butter (b) folding paper (c) dissolving salt (d) browning lemon ink
37. 37.🌱 Which of these is not needed for a seed to sprout? (a) water (b) air (c) soil (d) warmth
38. 38.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False

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