Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 621 · 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 neutral? (a) salt water (b) vinegar (c) soap solution (d) curd
2. 2.⚖️ 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
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
4. 4.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
5. 5.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
9. 9.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) white paper strips (d) water
11. 11.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
13. 13.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a balloon (d) water
14. 14.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
15. 15.🛟 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
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) yeast (d) a dropper or spoon
17. 17.True or false: detergent water is an acid. (a) True (b) False
18. 18.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
19. 19.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
21. 21.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
22. 22.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
23. 23.True or false: lemon juice is neutral. (a) False (b) True
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) lemon juice (d) a mirror
28. 28.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
29. 29.🫧 Which of these is a base? (a) lemon juice (b) orange juice (c) vinegar (d) baking soda water
30. 30.⚖️ 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
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a comb (c) a battery cell (d) a magnet
33. 33.🫧 Which of these is neutral? (a) detergent water (b) soap solution (c) lemon juice (d) sugar water
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
36. 36.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
37. 37.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
38. 38.⚖️ 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 turmeric paper
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a battery cell (d) a dropper or spoon
40. 40.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False

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