Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 964 · 40 questions

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

1. 1.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
2. 2.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) a comb
4. 4.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) turmeric powder (d) a magnet
5. 5.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) a comb (d) a balloon
6. 6.True or false: sugar water is an acid. (a) True (b) False
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
8. 8.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
9. 9.🫧 Which of these is neutral? (a) baking soda water (b) lemon juice (c) plain water (d) curd
10. 10.True or false: water is not needed for the turmeric test. (a) False (b) True
11. 11.True or false: yeast is needed for the turmeric test. (a) False (b) True
12. 12.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
13. 13.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the liquid we test (d) the light we look in
15. 15.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
16. 16.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) tamarind water (d) sugar water
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
23. 23.🫧 Which of these is neutral? (a) sugar water (b) detergent water (c) soap solution (d) vinegar
24. 24.🫧 Which of these is an acid? (a) detergent water (b) orange juice (c) plain water (d) sugar water
25. 25.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
26. 26.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
27. 27.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) lemon juice (d) soap solution
29. 29.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
31. 31.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
32. 32.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) vinegar (d) tamarind water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) white paper strips (d) a dropper or spoon
39. 39.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) lemon juice (d) vinegar

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