Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 107 · 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.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
3. 3.True or false: a rubber band is not needed for the leafy bag test. (a) False (b) True
4. 4.True or false: soap solution is an acid. (a) False (b) True
5. 5.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) salt from sea water (c) bran from wheat flour (d) small stones from dal
6. 6.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a mirror (c) a bowl (d) a jar with a tight lid
9. 9.🧺 Which of these is not needed for sprouting seeds? (a) yeast (b) water (c) moong seeds (d) cotton wool
10. 10.🪴 Which part of a plant does this job: carry water upward? (a) leaves (b) stem (c) flower (d) roots
11. 11.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
12. 12.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
13. 13.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
14. 14.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a cotton bud (c) a mirror (d) lemon juice
16. 16.🫧 Which of these is neutral? (a) lemon juice (b) salt water (c) orange juice (d) baking soda water
17. 17.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
18. 18.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
19. 19.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) wet or dry cotton (c) the same place (d) the number of seeds
21. 21.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
22. 22.True or false: a comb is not needed for the fizzy balloon. (a) False (b) True
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
25. 25.🫧 Which of these is a base? (a) baking soda water (b) curd (c) lemon juice (d) tamarind water
26. 26.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it bursts at once (c) it grows very little (d) it grows much faster
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) False (b) True
28. 28.True or false: make seeds is a job of the roots. (a) False (b) True
29. 29.⚖️ 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 change it (c) we measure it
30. 30.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) soap solution (d) tamarind water
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) the same cotton bud (c) how dark the writing is
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
35. 35.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) water (c) moong seeds (d) a few days
36. 36.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) yeast (c) a timer (d) cold water to rinse
37. 37.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a bowl (c) a timer (d) turmeric powder
38. 38.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
39. 39.True or false: give out water vapour is a job of the stem. (a) True (b) False
40. 40.True or false: tamarind water is neutral. (a) False (b) True

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