Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 158 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
5. 5.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
6. 6.True or false: orange juice is an acid. (a) False (b) True
7. 7.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the light we look in
11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) bright blue (d) reddish
12. 12.🫧 Which of these is an acid? (a) salt water (b) vinegar (c) sugar water (d) detergent water
13. 13.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
14. 14.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) soap solution (c) a mirror (d) a magnet
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a comb (d) lemon juice
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
18. 18.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
19. 19.True or false: tamarind water is neutral. (a) True (b) False
20. 20.True or false: a balloon is needed for the turmeric test. (a) False (b) True
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) turmeric powder (d) a dropper or spoon
22. 22.True or false: sugar water keeps turmeric yellow. (a) False (b) True
23. 23.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
26. 26.⚖️ 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
27. 27.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) white paper strips (d) a dropper or spoon
29. 29.⚖️ 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
30. 30.True or false: vinegar is a base. (a) False (b) True
31. 31.🫧 Which of these is an acid? (a) orange juice (b) detergent water (c) plain water (d) salt water
32. 32.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
33. 33.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a dropper or spoon (d) yeast
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) tamarind water (d) soap solution
35. 35.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a balloon (d) water
36. 36.True or false: vinegar is neutral. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
38. 38.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) turmeric powder (c) a mirror (d) a balloon
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) soap solution (d) lemon juice
40. 40.True or false: baking soda water keeps turmeric yellow. (a) True (b) False

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