Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 593 · 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? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
2. 2.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
3. 3.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) yeast (d) a dropper or spoon
5. 5.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
7. 7.🫧 Which of these is a base? (a) plain water (b) sugar water (c) tamarind water (d) detergent water
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) white paper strips (d) a mirror
9. 9.🔮 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) green (d) reddish
10. 10.True or false: orange juice is neutral. (a) False (b) True
11. 11.🔮 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
12. 12.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a magnet (d) soap solution
16. 16.True or false: detergent water is a base. (a) True (b) False
17. 17.🫧 Which of these is a base? (a) vinegar (b) soap solution (c) tamarind water (d) lemon juice
18. 18.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
19. 19.True or false: vinegar is an acid. (a) False (b) True
20. 20.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a battery cell (d) white paper strips
21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a dropper or spoon (d) a balloon
22. 22.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.⚖️ 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 measure it (c) we change it
24. 24.True or false: soap solution keeps turmeric yellow. (a) True (b) False
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
26. 26.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
27. 27.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
32. 32.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
33. 33.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) a dropper or spoon (d) soap solution
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) a dropper or spoon (d) water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
37. 37.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
38. 38.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) tamarind water (d) soap solution
40. 40.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) sugar water (d) baking soda water

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