Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 239 · 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? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the turmeric paper (d) the liquid we test
2. 2.⚖️ 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
3. 3.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
5. 5.True or false: yeast is needed for the turmeric test. (a) False (b) True
6. 6.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a mirror (d) turmeric powder
7. 7.⚖️ 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
8. 8.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) baking soda water (d) plain water
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
10. 10.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
11. 11.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
12. 12.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
14. 14.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
15. 15.🫧 Which of these is an acid? (a) detergent water (b) curd (c) plain water (d) baking soda water
16. 16.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) soap solution (d) a dropper or spoon
18. 18.🫧 Which of these is neutral? (a) curd (b) plain water (c) baking soda water (d) soap solution
19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
20. 20.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a magnet (d) white paper strips
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a comb (c) soap solution (d) turmeric powder
22. 22.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
23. 23.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
24. 24.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
26. 26.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
27. 27.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) vinegar (d) lemon juice
28. 28.True or false: lemon juice is an acid. (a) True (b) False
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
30. 30.🔮 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
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
32. 32.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
33. 33.True or false: detergent water keeps turmeric yellow. (a) False (b) True
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.True or false: vinegar is an acid. (a) False (b) True
36. 36.🫧 Which of these is neutral? (a) sugar water (b) vinegar (c) soap solution (d) orange juice
37. 37.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
38. 38.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
40. 40.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution

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