Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 512 · 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.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
2. 2.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a balloon (c) cotton wool (d) water
3. 3.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) put it in your mouth (c) pour it down the sink (d) throw it at a wall
4. 4.🧺 Which of these is needed for the fizzy balloon? (a) an empty bottle (b) a battery cell (c) a magnet (d) a mirror
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) add baking soda (c) rub it hard (d) ignore it
7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
8. 8.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) turmeric powder (c) a few days (d) water
9. 9.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a cotton bud (c) a battery cell (d) white paper
10. 10.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the jar adds butter (c) the lid is warm (d) fat bits stick together
11. 11.True or false: tamarind water is an acid. (a) True (b) False
12. 12.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) boiled seeds (c) wet seeds in the dark (d) wet seeds by a window
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
14. 14.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
15. 15.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
16. 16.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
17. 17.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
18. 18.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) True (b) False
19. 19.True or false: rusting iron is a change that can be undone. (a) True (b) False
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) salt (c) a magnet (d) a mirror
21. 21.🫗 How do we separate tea leaves from tea? (a) handpicking (b) filtering (c) winnowing (d) sieving
22. 22.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) warm water (c) turmeric powder (d) dry yeast
23. 23.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
26. 26.🔍 Which is the odd one out? (a) salt (b) sugar (c) warm water (d) time
27. 27.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the gas froze (c) the bottle got tired (d) an ingredient ran out
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is the one thing we change. (a) True (b) False
29. 29.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
31. 31.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
32. 32.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a mirror (c) a balloon (d) a battery cell
33. 33.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.True or false: a magnet is needed for making butter. (a) False (b) True
35. 35.True or false: time is something yeast does not need. (a) True (b) False
36. 36.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
37. 37.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) husk from rice grain (c) bran from wheat flour (d) sugar from sugar water
38. 38.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) curd (d) sugar water
39. 39.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
40. 40.True or false: salt is something yeast needs. (a) True (b) False

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