Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 324 · 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.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
3. 3.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) yeast (d) white paper strips
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) turmeric powder (d) water
7. 7.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
8. 8.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
9. 9.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) plain water (d) detergent water
10. 10.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a mirror (d) a balloon
11. 11.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
12. 12.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) water
14. 14.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the turmeric paper
17. 17.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
20. 20.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
22. 22.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a comb (c) soap solution (d) turmeric powder
23. 23.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a balloon (d) soap solution
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
26. 26.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
27. 27.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
28. 28.True or false: vinegar is an acid. (a) True (b) False
29. 29.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
31. 31.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.True or false: soap solution is a base. (a) False (b) True
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) soap solution (c) tamarind water (d) vinegar
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) water (d) turmeric powder
35. 35.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
39. 39.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
40. 40.True or false: soap solution is not needed for the turmeric test. (a) False (b) True

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