Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 65 · 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) water (b) a magnet (c) soap solution (d) turmeric powder
2. 2.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
3. 3.🛟 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
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
6. 6.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
8. 8.True or false: a comb is not needed for the turmeric test. (a) False (b) True
9. 9.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
10. 10.🫧 Which of these is neutral? (a) detergent water (b) lemon juice (c) salt water (d) tamarind water
11. 11.🫧 Which of these is an acid? (a) soap solution (b) sugar water (c) orange juice (d) detergent water
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 measure it (c) we change it
13. 13.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) lemon juice (d) a balloon
14. 14.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) soap solution (d) yeast
19. 19.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) lemon juice (c) soap solution (d) white paper strips
21. 21.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
22. 22.🫧 Which of these is neutral? (a) plain water (b) baking soda water (c) soap solution (d) lemon juice
23. 23.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
25. 25.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) sugar water
26. 26.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
27. 27.True or false: plain water is neutral. (a) True (b) False
28. 28.⚖️ 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 turmeric paper
29. 29.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
30. 30.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
33. 33.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
35. 35.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
39. 39.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution

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