Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 206 · 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: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) white paper strips (d) a balloon
3. 3.🧺 Which of these is needed for the secret lemon message? (a) an adult with an iron (b) turmeric powder (c) yeast (d) a magnet
4. 4.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
5. 5.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) skip washing (c) rub your eyes (d) wash your hands
6. 6.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) ghee (c) cheese (d) still runny cream
7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
8. 8.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
9. 9.🌱 Which of these is not needed for a seed to sprout? (a) water (b) sugar (c) air (d) warmth
10. 10.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) pale yellow (b) blue (c) dark green (d) bright red
11. 11.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) sugar (d) a magnet
12. 12.True or false: water is needed for the turmeric test. (a) False (b) True
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) tea stays behind (d) both stay behind
14. 14.🫧 Which of these is an acid? (a) lemon juice (b) plain water (c) sugar water (d) baking soda water
15. 15.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
16. 16.True or false: detergent water is a base. (a) True (b) False
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) the amount of vinegar (c) spoons of baking soda (d) the same bottle
18. 18.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
19. 19.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
20. 20.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
22. 22.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) magnetic (c) chemical (d) musical
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) True (b) False
25. 25.🌱 Which of these is not needed for a seed to sprout? (a) air (b) warmth (c) water (d) soil
26. 26.True or false: baking soda dissolves in water. (a) False (b) True
27. 27.True or false: warm water is needed for the yeast balloon. (a) True (b) False
28. 28.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
29. 29.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) ignore it (d) rinse with clean water
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) water (d) a battery cell
31. 31.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) warmth (c) salt (d) soil
32. 32.🧺 Which of these is needed for the secret lemon message? (a) a cotton bud (b) a magnet (c) yeast (d) a balloon
33. 33.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
35. 35.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) the same glass (c) the filter material (d) the amount poured
37. 37.True or false: melting butter is a change that cannot be undone. (a) False (b) True
38. 38.True or false: air is needed for a seed to sprout. (a) True (b) False
39. 39.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
40. 40.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow

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