Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 71 · 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.True or false: salt water is a base. (a) True (b) False
2. 2.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
3. 3.🫧 Which of these is neutral? (a) lemon juice (b) baking soda water (c) plain water (d) soap solution
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
7. 7.True or false: a comb is needed for the turmeric test. (a) True (b) False
8. 8.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) baking soda water (d) plain water
11. 11.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
12. 12.True or false: salt water is neutral. (a) True (b) False
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a balloon
14. 14.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
16. 16.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
17. 17.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
18. 18.True or false: detergent water keeps turmeric yellow. (a) False (b) True
19. 19.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
20. 20.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) orange juice (d) vinegar
21. 21.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) water (d) yeast
22. 22.🛟 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
23. 23.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) curd (d) salt water
24. 24.True or false: vinegar is an acid. (a) False (b) True
25. 25.True or false: orange juice is an acid. (a) False (b) True
26. 26.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a magnet (d) water
29. 29.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
30. 30.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) soap solution (d) tamarind water
32. 32.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.True or false: soap solution keeps turmeric yellow. (a) False (b) True
34. 34.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
35. 35.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.True or false: soap solution is neutral. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) detergent water (d) vinegar
38. 38.True or false: detergent water is an acid. (a) True (b) False
39. 39.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once

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