Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 303 · 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.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
6. 6.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) a battery cell
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.True or false: a comb is not needed for the turmeric test. (a) True (b) False
11. 11.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) lemon juice (d) plain water
12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
14. 14.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
15. 15.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) water (d) a mirror
17. 17.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) lemon juice (c) salt water (d) vinegar
19. 19.True or false: vinegar is an acid. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) white paper strips (d) water
21. 21.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) water (d) lemon juice
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
24. 24.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) detergent water (d) plain water
26. 26.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
27. 27.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
29. 29.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) turmeric powder (d) a mirror
31. 31.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
32. 32.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) baking soda water (d) plain water
34. 34.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
35. 35.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
36. 36.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a battery cell (d) white paper strips
37. 37.True or false: water is needed for the turmeric test. (a) True (b) False
38. 38.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
39. 39.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
40. 40.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) soap solution (d) a battery cell

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