Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 646 · 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? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
3. 3.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the light we look in (d) the colour we see
5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
6. 6.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
7. 7.🔮 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
8. 8.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
9. 9.True or false: plain water is neutral. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
11. 11.⚖️ 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
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) lemon juice (d) baking soda water
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) salt water (d) plain water
14. 14.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) vinegar (d) salt water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
16. 16.True or false: tamarind water is a base. (a) False (b) True
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
18. 18.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
19. 19.True or false: vinegar is an acid. (a) False (b) True
20. 20.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
21. 21.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) tamarind water (d) detergent water
24. 24.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) soap solution (d) baking soda water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
27. 27.⚖️ 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 change it (c) we measure it
28. 28.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a mirror (c) a balloon (d) a magnet
29. 29.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) salt water (d) tamarind water
30. 30.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
31. 31.⚖️ 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 colour we see
32. 32.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) curd (d) baking soda water
33. 33.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
34. 34.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
37. 37.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
38. 38.⚖️ 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
39. 39.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) a magnet (d) a mirror

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