Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 583 · 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.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is what we measure. (a) False (b) True
2. 2.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) time to make butter (c) how hard we shake
4. 4.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it can block breathing (c) it gets wet (d) it changes colour
5. 5.🧺 Which of these is not needed for the turmeric test? (a) water (b) yeast (c) lemon juice (d) soap solution
6. 6.🔍 Which is the odd one out? (a) salt (b) vinegar (c) sunlight (d) time
7. 7.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.⚖️ 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) True (b) False
10. 10.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
11. 11.True or false: bad grains from rice is done by handpicking. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) food colour (d) chalk powder
13. 13.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) glucose powder (d) cooking oil
14. 14.True or false: small pebbles does not dissolve in water. (a) False (b) True
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a magnet (d) turmeric powder
16. 16.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) water (c) a mirror (d) moong seeds
17. 17.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
18. 18.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
19. 19.🫧 Which of these is an acid? (a) detergent water (b) vinegar (c) baking soda water (d) plain water
20. 20.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a battery cell (c) a seed (d) a balloon
21. 21.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) salt
22. 22.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
23. 23.🌱 Is salt needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
24. 24.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they become magnets (b) they float apart (c) they react (d) they freeze
25. 25.True or false: water is needed for the turmeric test. (a) False (b) True
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) sugar water
29. 29.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
30. 30.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
31. 31.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🫗 Which of these is done by filtering? (a) small stones from dal (b) tea leaves from tea (c) bran from wheat flour (d) sugar from sugar water
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) white paper strips (d) a comb
36. 36.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) milk turning to curd (d) folding paper
37. 37.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) vinegar (d) sugar
39. 39.🪴 Which part of a plant does this job: hold up the leaves? (a) leaves (b) roots (c) flower (d) stem
40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind

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