Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 494 · 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.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
2. 2.True or false: yeast is needed for the turmeric test. (a) True (b) False
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the liquid we test
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a dropper or spoon (d) yeast
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
7. 7.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
8. 8.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) vinegar (d) detergent water
10. 10.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
11. 11.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
12. 12.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) water (d) lemon juice
14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
15. 15.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
17. 17.True or false: sugar water keeps turmeric yellow. (a) True (b) False
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) white paper strips (d) soap solution
19. 19.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
20. 20.⚖️ 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
21. 21.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
24. 24.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
25. 25.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
26. 26.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a battery cell (d) lemon juice
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
28. 28.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
29. 29.True or false: soap solution is a base. (a) False (b) True
30. 30.⚖️ 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
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
32. 32.🫧 Which of these is an acid? (a) salt water (b) orange juice (c) plain water (d) baking soda water
33. 33.True or false: soap solution is needed for the turmeric test. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
37. 37.🔮 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
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) tamarind water (d) plain water
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) water (d) a mirror
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False

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