Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 464 · 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 is a base? (a) soap solution (b) orange juice (c) curd (d) sugar water
2. 2.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) soap solution (d) salt water
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
5. 5.True or false: water is not needed for the turmeric test. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a balloon (d) a dropper or spoon
8. 8.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
9. 9.True or false: soap solution is a base. (a) False (b) True
10. 10.🫧 Which of these is a base? (a) vinegar (b) curd (c) lemon juice (d) baking soda water
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
16. 16.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
17. 17.⚖️ 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 measure it (c) we change it
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) water (d) a comb
20. 20.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
21. 21.True or false: vinegar keeps turmeric yellow. (a) False (b) True
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) plain water (d) soap solution
23. 23.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
25. 25.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) turmeric powder (d) a balloon
26. 26.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) turmeric powder
28. 28.True or false: orange juice is an acid. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
31. 31.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
32. 32.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.🧺 Which of these is not needed for the turmeric test? (a) water (b) a comb (c) soap solution (d) turmeric powder
34. 34.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
35. 35.True or false: a balloon is needed for the turmeric test. (a) True (b) False
36. 36.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.🫧 Which of these is neutral? (a) orange juice (b) curd (c) tamarind water (d) plain water
38. 38.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) tamarind water (d) salt water
39. 39.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) sugar water (d) tamarind water
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) salt water (d) lemon juice

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