Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 426 · 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.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
3. 3.True or false: detergent water keeps turmeric yellow. (a) True (b) False
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) white paper strips (d) soap solution
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) soap solution (d) lemon juice
6. 6.🫧 Which of these is neutral? (a) baking soda water (b) plain water (c) tamarind water (d) curd
7. 7.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
8. 8.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
9. 9.⚖️ 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 turmeric paper (c) the light we look in (d) the liquid we test
10. 10.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) yeast (d) water
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) baking soda water (d) salt water
13. 13.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
14. 14.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
15. 15.⚖️ 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
16. 16.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
17. 17.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a comb (d) a dropper or spoon
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
19. 19.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) turmeric powder (d) lemon juice
21. 21.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) lemon juice (d) vinegar
22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
23. 23.True or false: water is not needed for the turmeric test. (a) True (b) False
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) water (d) a balloon
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
26. 26.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
27. 27.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
28. 28.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a magnet (d) a mirror
30. 30.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
32. 32.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
35. 35.⚖️ 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
36. 36.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the turmeric test? (a) yeast (b) white paper strips (c) a balloon (d) a mirror
40. 40.True or false: soap solution is an acid. (a) False (b) True

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