Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 864 · 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.True or false: salt water is an acid. (a) False (b) True
2. 2.🍞 Which of these is something yeast does not need? (a) warm water (b) sunlight (c) sugar (d) time
3. 3.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) lemon juice (c) turmeric powder (d) an adult with an iron
4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) water (d) a mirror
5. 5.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
6. 6.True or false: water is not needed for the turmeric test. (a) False (b) True
7. 7.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
8. 8.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a comb (c) a small bottle (d) turmeric powder
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
10. 10.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) moong seeds (c) yeast (d) a small bowl
11. 11.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is kept the same. (a) False (b) True
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
13. 13.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a cotton bud (c) turmeric powder (d) a battery cell
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) the time we wait (b) sun or shade (c) amount of water drops
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a mirror (c) a clear plastic bag (d) turmeric powder
17. 17.🫧 Which of these is neutral? (a) plain water (b) tamarind water (c) curd (d) soap solution
18. 18.🍋 Why can’t you see the lemon writing once it dries? (a) dry juice is see-through (b) it turned into air (c) the paper ate it (d) the ink is magnetic
19. 19.True or false: freezing water is a change that can be undone. (a) True (b) False
20. 20.🧺 Do we need a battery cell for sprouting seeds? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for making butter? (a) a timer (b) fresh cream (c) a magnet (d) a bowl
22. 22.True or false: boiled seeds does not sprout. (a) False (b) True
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
25. 25.True or false: vinegar is a base. (a) False (b) True
26. 26.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a seed (c) sugar (d) a balloon
27. 27.🫧 Which of these is neutral? (a) orange juice (b) sugar water (c) detergent water (d) vinegar
28. 28.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
29. 29.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) yes, if cooled (c) no, it stays brown (d) yes, if shaken
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the kind of balloon (b) spoons of baking soda (c) size of the balloon (d) the amount of vinegar
31. 31.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
32. 32.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) turmeric powder (d) a balloon
34. 34.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a clear plastic bag (c) sunlight (d) turmeric powder
35. 35.🪴 Which of these is a job of the flower? (a) hold the plant in soil (b) make seeds (c) take in water from soil (d) hold up the leaves
36. 36.True or false: time is something yeast does not need. (a) False (b) True
37. 37.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) cold water to rinse (c) a battery cell (d) fresh cream
38. 38.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) a cotton bud (c) turmeric powder (d) lemon juice
39. 39.True or false: sugar is needed for the yeast balloon. (a) False (b) True
40. 40.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) the kind of seeds (c) the same bowls (d) how many seeds sprout

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