Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 559 · 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.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
2. 2.⚖️ 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 number of drops (d) the colour we see
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) lemon juice (d) soap solution
4. 4.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a dropper or spoon (d) a comb
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a magnet (d) water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
11. 11.🛟 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
12. 12.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
14. 14.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
15. 15.🫧 Which of these is an acid? (a) curd (b) detergent water (c) plain water (d) soap solution
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
17. 17.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
18. 18.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.True or false: a comb is not needed for the turmeric test. (a) True (b) False
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) turmeric powder (d) water
21. 21.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) yeast (d) white paper strips
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) white paper strips (d) soap solution
23. 23.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
25. 25.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
26. 26.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) a battery cell
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
28. 28.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
31. 31.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
32. 32.True or false: lemon juice is a base. (a) True (b) False
33. 33.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) soap solution (d) vinegar
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) lemon juice (d) tamarind water
36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
37. 37.⚖️ 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
38. 38.True or false: a balloon is needed for the turmeric test. (a) True (b) False
39. 39.True or false: baking soda water is a base. (a) False (b) True
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a battery cell (d) a dropper or spoon

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