Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 452 · 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 growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) turmeric powder
2. 2.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) plugging in the iron (c) reading the message (d) writing the message
3. 3.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
4. 4.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) vinegar (c) a balloon (d) sugar
6. 6.True or false: vinegar is not needed for the leafy bag test. (a) False (b) True
7. 7.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) melting butter (d) rusting iron
8. 8.🍞 Which of these is something yeast needs? (a) vinegar (b) sunlight (c) time (d) salt
9. 9.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
10. 10.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) wet seeds in the dark (c) seeds on dry cotton (d) boiled seeds
11. 11.True or false: turmeric powder is needed for the leafy bag test. (a) True (b) False
12. 12.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
13. 13.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds in the freezer (c) seeds on wet cotton (d) seeds on dry cotton
14. 14.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) yeast (c) a balloon (d) an adult with an iron
16. 16.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) dark brown words (c) almost nothing (d) blue words
17. 17.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) dry yeast (d) a small bottle
19. 19.True or false: hold the plant in soil is a job of the roots. (a) False (b) True
20. 20.True or false: water is not needed for sprouting seeds. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) warmth (b) air (c) water (d) soil
22. 22.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
25. 25.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
26. 26.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) leaves pass through (d) both stay behind
27. 27.True or false: sand does not dissolve in water. (a) True (b) False
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) True (b) False
29. 29.🧺 Do we need a battery cell for sprouting seeds? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) sand and pebbles (d) a clean glass
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) baking soda (c) an empty bottle (d) vinegar
32. 32.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) boiled seeds (c) seeds in the freezer (d) wet seeds by a window
33. 33.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) False (b) True
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
36. 36.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) soap solution (d) yeast
38. 38.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
39. 39.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) turmeric powder (c) a comb (d) sugar
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False

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