Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 617 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) soap solution (d) a magnet
2. 2.True or false: plain water keeps turmeric yellow. (a) True (b) False
3. 3.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) plain water (d) tamarind water
4. 4.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
5. 5.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.⚖️ 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
7. 7.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
9. 9.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
10. 10.⚖️ 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
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
13. 13.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
14. 14.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
15. 15.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
16. 16.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
17. 17.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
18. 18.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
22. 22.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) water (d) yeast
23. 23.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
24. 24.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
25. 25.True or false: vinegar is an acid. (a) False (b) True
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
28. 28.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
29. 29.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) sugar water (d) lemon juice
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) turmeric powder (d) a dropper or spoon
32. 32.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.True or false: soap solution is needed for the turmeric test. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
35. 35.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is magnetic (d) soap is an acid
36. 36.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
38. 38.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) plain water (d) salt water
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) lemon juice (d) water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops

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