Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 554 · 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? True or false: the number of drops is the one thing we change. (a) True (b) False
2. 2.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
3. 3.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a balloon (d) a dropper or spoon
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) soap solution (d) a mirror
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
7. 7.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) a dropper or spoon (d) a magnet
8. 8.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
9. 9.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) water (d) a dropper or spoon
11. 11.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
12. 12.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
13. 13.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
14. 14.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
15. 15.True or false: orange juice is an acid. (a) True (b) False
16. 16.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
17. 17.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) salt water (d) baking soda water
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) white paper strips (d) soap solution
19. 19.True or false: lemon juice is an acid. (a) True (b) False
20. 20.⚖️ 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 turmeric paper
21. 21.True or false: lemon juice is a base. (a) True (b) False
22. 22.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
23. 23.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
25. 25.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
26. 26.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
27. 27.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
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.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
31. 31.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
32. 32.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
34. 34.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) tamarind water (d) plain water
35. 35.⚖️ 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 liquid we test (c) the colour we see (d) the light we look in
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.⚖️ 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
38. 38.🫧 Which of these is neutral? (a) salt water (b) lemon juice (c) soap solution (d) baking soda water
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) lemon juice (d) water
40. 40.⚖️ 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 change it (c) we measure it

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