Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 243 · 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.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) white paper (c) a mirror (d) a small bowl
2. 2.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
3. 3.🔍 Which is the odd one out? (a) putting the iron away (b) ironing the paper (c) reading the message (d) plugging in the iron
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) turmeric powder (c) cotton or cloth (d) sand and pebbles
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the same cotton bud (b) the kind of juice (c) how dark the writing is
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) warm water (b) salt (c) sugar (d) time
8. 8.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they react (b) they become magnets (c) they freeze (d) they float apart
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
10. 10.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
11. 11.True or false: a magnet is not needed for making butter. (a) False (b) True
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
14. 14.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) seeds in the freezer (c) boiled seeds (d) wet seeds in the dark
15. 15.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
16. 16.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
17. 17.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
18. 18.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
19. 19.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) wet seeds by a window (c) seeds on wet cotton (d) seeds on dry cotton
20. 20.⚖️ 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) sun or shade (b) the same kind of bag (c) the time we wait (d) amount of water drops
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the number of drops
22. 22.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
23. 23.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a mirror (c) water (d) a small bowl
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) a funnel (d) muddy water
25. 25.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
26. 26.True or false: orange juice is an acid. (a) True (b) False
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a balloon (d) lemon juice
29. 29.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is smaller (c) the balloon is bigger (d) it turns to bread
30. 30.True or false: bran from wheat flour is done by sieving. (a) True (b) False
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) True (b) False
36. 36.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
37. 37.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
38. 38.True or false: make seeds is a job of the stem. (a) True (b) False
39. 39.🌱 Will these sprout: seeds in the freezer? (a) does not sprout (b) sprouts
40. 40.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False

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