Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 560 · 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.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the flowers (c) the roots (d) the fruits
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a funnel (d) a magnet
3. 3.🔮 Can the brown writing go back to being invisible? (a) yes, if cooled (b) yes, in the dark (c) no, it stays brown (d) yes, if shaken
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) a mirror
5. 5.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) the same place (c) the number of seeds (d) the kind of seeds
6. 6.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) cotton wool (c) a mirror (d) a magnet
7. 7.True or false: a magnet is something yeast needs. (a) False (b) True
8. 8.🧺 Which of these is needed for sprouting seeds? (a) turmeric powder (b) moong seeds (c) a magnet (d) yeast
9. 9.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) seeds in the freezer (c) seeds on wet cotton (d) boiled seeds
10. 10.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) leaves (c) roots (d) stem
11. 11.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) only an adult (c) the youngest child (d) whoever is fastest
12. 12.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
13. 13.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
14. 14.🫧 Which of these is a base? (a) detergent water (b) sugar water (c) lemon juice (d) plain water
15. 15.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) a magnet (d) time
16. 16.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it turns yellow (c) so cream does not spill (d) so it gets hot
17. 17.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) lemon juice (d) salt water
18. 18.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) baking soda (d) small pebbles
19. 19.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
20. 20.True or false: seeds on dry cotton sprouts in a few days. (a) True (b) False
21. 21.True or false: fresh cream is needed for making butter. (a) False (b) True
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) time to make butter (c) the amount of cream (d) the cream temperature
23. 23.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🔍 Which is the odd one out? (a) folding paper (b) milk turning to curd (c) cooking an egg (d) baking a cake
25. 25.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
26. 26.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) the same dish (c) sunny or shady place (d) the kind of salt
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is kept the same. (a) True (b) False
29. 29.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) it is only dissolving (c) yes, a new gas forms (d) no, nothing changes
30. 30.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
31. 31.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) as tight as possible (c) gently, not too tight (d) with a hot glue gun
32. 32.🧺 Which of these is needed for the secret lemon message? (a) white paper (b) a mirror (c) a balloon (d) yeast
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) True (b) False
34. 34.True or false: sugar water is an acid. (a) False (b) True
35. 35.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) glucose powder (d) table salt
36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: turmeric powder is not needed for sprouting seeds. (a) False (b) True
38. 38.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
39. 39.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed
40. 40.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) False (b) True

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