Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 264 · 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.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
2. 2.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) yeast (d) white paper strips
4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
6. 6.True or false: soap solution is needed for the turmeric test. (a) False (b) True
7. 7.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) turmeric powder (d) a mirror
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) a battery cell (d) lemon juice
9. 9.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) detergent water (c) soap solution (d) baking soda water
10. 10.⚖️ 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
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
12. 12.True or false: soap solution is neutral. (a) True (b) False
13. 13.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) water (d) a comb
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) soap solution (d) turmeric powder
16. 16.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
17. 17.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) detergent water (d) tamarind water
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) baking soda water
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the light we look in (d) the colour we see
21. 21.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
22. 22.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
24. 24.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a dropper or spoon (d) water
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
30. 30.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) vinegar (d) soap solution
33. 33.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) a magnet (d) a balloon
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) sugar water (d) tamarind water
35. 35.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) lemon juice (d) water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
38. 38.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a magnet (c) a comb (d) yeast
40. 40.🫧 Which of these is a base? (a) plain water (b) detergent water (c) curd (d) lemon juice

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