Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 905 · 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 keeps turmeric yellow? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
2. 2.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) soap solution (d) water
5. 5.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) a comb
6. 6.True or false: soap solution is needed for the turmeric test. (a) False (b) True
7. 7.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
9. 9.⚖️ 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
10. 10.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
11. 11.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
12. 12.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) white paper strips (d) lemon juice
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) plain water (d) lemon juice
16. 16.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) lemon juice (d) tamarind water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) yeast (d) white paper strips
20. 20.True or false: vinegar is a base. (a) False (b) True
21. 21.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
22. 22.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) water (d) a comb
24. 24.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
25. 25.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) lemon juice (d) a battery cell
26. 26.⚖️ 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 measure it (c) we change it
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the colour we see
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) yeast (d) lemon juice
29. 29.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
30. 30.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a magnet (d) lemon juice
32. 32.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) sugar water (d) orange juice
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
34. 34.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
35. 35.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) turmeric powder (d) a magnet
37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
38. 38.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) white paper strips (d) a mirror
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
40. 40.True or false: plain water is neutral. (a) True (b) False

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