Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 564 · 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.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) sugar water (d) vinegar
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the light we look in
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🫧 Which of these is a base? (a) tamarind water (b) sugar water (c) baking soda water (d) curd
5. 5.True or false: orange juice is neutral. (a) True (b) False
6. 6.⚖️ 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 light we look in
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) turmeric powder (d) white paper strips
8. 8.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
10. 10.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
11. 11.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) lemon juice (d) plain water
12. 12.⚖️ 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
13. 13.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
14. 14.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) lemon juice (d) a dropper or spoon
16. 16.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.🔮 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
18. 18.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
19. 19.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a battery cell (d) a balloon
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) soap solution (d) vinegar
24. 24.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
25. 25.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
26. 26.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
27. 27.True or false: water is needed for the turmeric test. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
29. 29.True or false: plain water keeps turmeric yellow. (a) False (b) True
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
33. 33.True or false: vinegar is an acid. (a) False (b) True
34. 34.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
35. 35.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
36. 36.True or false: a magnet is needed for the turmeric test. (a) False (b) True
37. 37.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) a battery cell (d) lemon juice
38. 38.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
39. 39.True or false: yeast is not needed for the turmeric test. (a) False (b) True
40. 40.⚖️ 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 liquid we test (d) the light we look in

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