Turmeric Indicator Experiment Worksheet

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

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