Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 298 · 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.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) lemon juice (c) a cotton bud (d) a battery cell
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
3. 3.True or false: sunlight is not needed for the leafy bag test. (a) False (b) True
4. 4.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) plain water (d) detergent water
5. 5.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) dry yeast (c) sugar (d) a comb
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same muddy water (c) how clear the water is (d) the filter material
7. 7.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the balloon got cold (c) an ingredient ran out (d) the bottle got tired
8. 8.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the same jar (b) how hard we shake (c) the amount of cream (d) time to make butter
9. 9.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
10. 10.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
11. 11.True or false: a magnet is needed for the secret lemon message. (a) False (b) True
12. 12.True or false: folding paper is a change that can be undone. (a) True (b) False
13. 13.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) water (c) turmeric powder (d) soap solution
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) bright blue (d) reddish
16. 16.🪴 Which part of a plant does this job: carry water upward? (a) flower (b) roots (c) stem (d) leaves
17. 17.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a comb (c) a seed (d) baking soda
18. 18.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) a funnel or spoon (c) a balloon (d) vinegar
21. 21.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) the paper ate it (c) dry juice is see-through (d) the ink is magnetic
22. 22.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
23. 23.True or false: water is not needed for the turmeric test. (a) False (b) True
24. 24.True or false: fresh cream is needed for making butter. (a) True (b) False
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a magnet (d) a shallow dish
26. 26.True or false: yeast is needed for the muddy water filter. (a) False (b) True
27. 27.True or false: seeds on dry cotton does not sprout. (a) False (b) True
28. 28.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
29. 29.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
31. 31.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) sugar (c) a paper clip (d) a mirror
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
34. 34.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) wash your hands (c) skip washing (d) rub your eyes
35. 35.True or false: tea leaves from tea is done by filtering. (a) True (b) False
36. 36.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a few days (c) a magnet (d) moong seeds
37. 37.🧈 Before the butter appears, what does the cream turn into? (a) clear water (b) thick whipped cream (c) powder (d) ice
38. 38.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True

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