Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 96 · 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 of these is an acid? (a) salt water (b) detergent water (c) sugar water (d) vinegar
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
6. 6.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
7. 7.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
9. 9.True or false: a mirror is needed for the turmeric test. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
11. 11.⚖️ 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 number of drops (c) the liquid we test (d) the light we look in
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
13. 13.🫧 Which of these is a base? (a) lemon juice (b) plain water (c) orange juice (d) soap solution
14. 14.True or false: plain water is a base. (a) False (b) True
15. 15.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
16. 16.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) water (d) lemon juice
18. 18.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
20. 20.True or false: a magnet is needed for the turmeric test. (a) True (b) False
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the number of drops
23. 23.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) white paper strips (d) water
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) soap solution (d) lemon juice
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
28. 28.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
29. 29.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
30. 30.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.⚖️ 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
32. 32.True or false: a balloon is needed for the turmeric test. (a) True (b) False
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) white paper strips (d) water
34. 34.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
35. 35.🫧 Which of these is neutral? (a) plain water (b) baking soda water (c) soap solution (d) vinegar
36. 36.🫧 Is lemon juice 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? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.True or false: water is needed for the turmeric test. (a) False (b) True
39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
40. 40.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) sugar water (d) vinegar

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