Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 175 · 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.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
2. 2.🛟 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
3. 3.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
4. 4.🔮 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
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
6. 6.True or false: salt water keeps turmeric yellow. (a) True (b) False
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
8. 8.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a comb (d) a dropper or spoon
9. 9.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
10. 10.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
12. 12.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) turmeric powder (d) a mirror
13. 13.⚖️ 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
14. 14.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a battery cell (d) a mirror
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
19. 19.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
21. 21.True or false: water is not needed for the turmeric test. (a) False (b) True
22. 22.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it turns blue (d) it disappears
23. 23.⚖️ 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
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
26. 26.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) turmeric powder (d) water
27. 27.True or false: plain water is neutral. (a) False (b) True
28. 28.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) sugar water (d) orange juice
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
30. 30.True or false: detergent water keeps turmeric yellow. (a) True (b) False
31. 31.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) water (c) turmeric powder (d) lemon juice
32. 32.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) water (d) a magnet
33. 33.⚖️ 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 liquid we test (c) the turmeric paper (d) the number of drops
34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🫧 Which of these is neutral? (a) sugar water (b) curd (c) orange juice (d) soap solution
36. 36.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) lemon juice (d) soap solution
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
38. 38.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.True or false: vinegar keeps turmeric yellow. (a) False (b) True
40. 40.True or false: a balloon is needed for the turmeric test. (a) False (b) True

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