Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 747 · 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.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap water is a base (d) soap is magnetic
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
3. 3.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) plain water (d) lemon juice
4. 4.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) turmeric powder (d) soap solution
6. 6.True or false: curd is an acid. (a) False (b) True
7. 7.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
8. 8.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
9. 9.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
10. 10.⚖️ 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
11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) salt water (d) tamarind water
13. 13.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) lemon juice (c) water (d) a dropper or spoon
14. 14.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) plain water (d) soap solution
15. 15.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) yeast (d) water
17. 17.True or false: a comb is not needed for the turmeric test. (a) False (b) True
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
19. 19.True or false: baking soda water is neutral. (a) True (b) False
20. 20.⚖️ 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 colour we see (c) the turmeric paper (d) the liquid we test
21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
22. 22.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a comb (d) a dropper or spoon
23. 23.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) vinegar (d) tamarind water
24. 24.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
26. 26.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
27. 27.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
28. 28.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) yeast (d) water
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a battery cell (c) soap solution (d) lemon juice
30. 30.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.True or false: soap solution is neutral. (a) False (b) True
32. 32.True or false: detergent water is an acid. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a balloon (d) lemon juice
34. 34.True or false: soap solution keeps turmeric yellow. (a) True (b) False
35. 35.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
36. 36.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) tamarind water (d) baking soda water
40. 40.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform

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