Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 314 · 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.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
2. 2.🍋 Which of these steps is a job for an adult? (a) writing the message (b) cutting the lemon (c) reading the message (d) dipping the cotton bud
3. 3.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
4. 4.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) melting ice (d) browning lemon ink
5. 5.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) sun or shade (b) the kind of plant (c) the same kind of bag (d) amount of water drops
6. 6.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) a clean glass (d) cotton or cloth
8. 8.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) more butter forms (c) it turns blue (d) it turns to cheese
9. 9.🪴 Which of these is a job of the stem? (a) take in water from soil (b) hold up the leaves (c) make seeds (d) make food in sunlight
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a clean glass (d) turmeric powder
11. 11.🌱 Why do the seeds on dry cotton not sprout? (a) they are too wet (b) they have no salt (c) they have no soil (d) they have no water
12. 12.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a mirror (c) a balloon (d) a timer
13. 13.True or false: a few hours is needed for the leafy bag test. (a) True (b) False
14. 14.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.⚖️ 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 water temperature (c) the amount of yeast
17. 17.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) a magnet (c) white paper (d) an adult with an iron
18. 18.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 Do we need a battery cell for the secret lemon message? (a) not needed (b) needed
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) True (b) False
22. 22.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) husk from rice grain (c) bran from wheat flour (d) mud from water
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the same jar (b) time to make butter (c) how hard we shake (d) the cream temperature
24. 24.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) yeast (c) lemon juice (d) a small bowl
25. 25.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) air from outside (c) smoke (d) carbon dioxide gas
26. 26.True or false: melting butter is a change that cannot be undone. (a) False (b) True
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
29. 29.🛟 Why must the jar lid be screwed on tightly? (a) so cream does not spill (b) so it gets hot (c) so air gets out (d) so it turns yellow
30. 30.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) cold water to rinse (c) a mirror (d) a jar with a tight lid
31. 31.True or false: dry yeast is needed for the yeast balloon. (a) True (b) False
32. 32.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) plugging in the iron (d) dipping the cotton bud
33. 33.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) sieving (d) evaporating
34. 34.True or false: soap solution is a base. (a) False (b) True
35. 35.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a small bottle (c) dry yeast (d) a mirror
36. 36.True or false: ironing the paper is a job a child can do. (a) False (b) True
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) yeast (d) sand and pebbles
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) detergent water (d) plain water
39. 39.🧺 Do we need vinegar for the fizzy balloon? (a) needed (b) not needed
40. 40.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed

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