Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 961 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) turmeric powder (d) lemon juice
2. 2.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) baking soda water (d) vinegar
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a battery cell (d) turmeric powder
5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
6. 6.True or false: baking soda water is a base. (a) False (b) True
7. 7.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
10. 10.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
11. 11.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a magnet (d) soap solution
14. 14.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.True or false: plain water keeps turmeric yellow. (a) True (b) False
16. 16.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
17. 17.⚖️ 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 turmeric paper (c) the liquid we test (d) the number of drops
18. 18.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
19. 19.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) soap solution (d) yeast
20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the light we look in
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
25. 25.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
26. 26.True or false: detergent water keeps turmeric yellow. (a) True (b) False
27. 27.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
28. 28.🟡 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
29. 29.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
30. 30.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
31. 31.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
32. 32.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) white paper strips (c) a dropper or spoon (d) lemon juice
33. 33.True or false: curd is neutral. (a) True (b) False
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) a dropper or spoon (d) water
35. 35.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) soap solution (d) yeast
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
37. 37.⚖️ 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 light we look in
38. 38.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) orange juice (d) plain water
39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a comb (d) a mirror

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