Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 502 · 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.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
3. 3.True or false: a balloon is needed for the turmeric test. (a) True (b) False
4. 4.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
5. 5.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
7. 7.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
14. 14.🫧 Which of these is a base? (a) salt water (b) curd (c) baking soda water (d) lemon juice
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
16. 16.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
17. 17.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it turns darker red (d) it disappears
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a dropper or spoon (d) a magnet
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
23. 23.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a comb (d) yeast
24. 24.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) baking soda water (d) vinegar
25. 25.True or false: plain water is neutral. (a) False (b) True
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) water (d) a dropper or spoon
29. 29.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
30. 30.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) water (d) a balloon
31. 31.🫧 Which of these is neutral? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
32. 32.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
33. 33.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
34. 34.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
35. 35.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) lemon juice (d) a mirror
37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
39. 39.True or false: salt water keeps turmeric yellow. (a) False (b) True
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a magnet (d) turmeric powder

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