Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 325 · 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 yeast for the turmeric test? (a) not needed (b) needed
2. 2.🔮 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
3. 3.🫧 Which of these is an acid? (a) detergent water (b) lemon juice (c) plain water (d) baking soda water
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
5. 5.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
8. 8.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
9. 9.🫧 Which of these is a base? (a) plain water (b) tamarind water (c) salt water (d) baking soda water
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) lemon juice (d) white paper strips
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) yeast (d) water
14. 14.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) lemon juice (d) a magnet
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a battery cell (d) white paper strips
17. 17.True or false: lemon juice is an acid. (a) False (b) True
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a balloon (d) lemon juice
19. 19.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) baking soda water (d) detergent water
21. 21.True or false: baking soda water is neutral. (a) True (b) False
22. 22.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
23. 23.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
24. 24.True or false: a magnet is needed for the turmeric test. (a) True (b) False
25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the light we look in (d) the colour we see
27. 27.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) salt water
29. 29.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
30. 30.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
33. 33.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
34. 34.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) sugar water
35. 35.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) baking soda water (d) lemon juice
36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
37. 37.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) plain water
39. 39.True or false: soap solution keeps turmeric yellow. (a) True (b) False
40. 40.True or false: a balloon is not needed for the turmeric test. (a) True (b) False

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