Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 770 · 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.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
2. 2.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
3. 3.True or false: salt water is neutral. (a) True (b) False
4. 4.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.True or false: water is needed for the turmeric test. (a) True (b) False
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) turmeric powder (c) a dropper or spoon (d) white paper strips
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
9. 9.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
10. 10.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
11. 11.🫧 Which of these is an acid? (a) plain water (b) orange juice (c) salt water (d) soap solution
12. 12.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) turmeric powder (d) a dropper or spoon
14. 14.True or false: a balloon is needed for the turmeric test. (a) False (b) True
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
16. 16.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is magnetic (d) soap is an acid
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) white paper strips (d) lemon juice
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) lemon juice (d) plain water
19. 19.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) plain water (d) vinegar
20. 20.True or false: a mirror is needed for the turmeric test. (a) True (b) False
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: vinegar is an acid. (a) False (b) True
23. 23.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
24. 24.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
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.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
27. 27.⚖️ 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
28. 28.🛟 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
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) a dropper or spoon (d) soap solution
31. 31.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
32. 32.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a balloon (d) water
33. 33.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
34. 34.True or false: baking soda water is a base. (a) True (b) False
35. 35.⚖️ 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 light we look in (d) the colour we see
36. 36.⚖️ 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
37. 37.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
39. 39.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) soap solution (d) a balloon
40. 40.True or false: curd is an acid. (a) False (b) True

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