Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 576 · 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 turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) baking soda water (d) vinegar
2. 2.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a balloon (d) a magnet
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) turmeric powder (d) a mirror
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) white paper strips (d) a mirror
7. 7.True or false: plain water keeps turmeric yellow. (a) True (b) False
8. 8.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) turmeric powder (d) a comb
9. 9.True or false: orange juice is neutral. (a) True (b) False
10. 10.True or false: a mirror is needed for the turmeric test. (a) True (b) False
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) plain water (d) soap solution
12. 12.⚖️ 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
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) water (d) a balloon
15. 15.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
16. 16.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
17. 17.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
18. 18.True or false: a comb is needed for the turmeric test. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) sugar water (d) detergent water
20. 20.⚖️ 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 turmeric paper
21. 21.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the number of drops
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
24. 24.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
26. 26.True or false: water is needed for the turmeric test. (a) False (b) True
27. 27.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) lemon juice (d) salt water
28. 28.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
29. 29.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
30. 30.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
31. 31.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
32. 32.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
33. 33.True or false: lemon juice is a base. (a) True (b) False
34. 34.⚖️ 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
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns yellow again (d) it turns blue
38. 38.True or false: sugar water keeps turmeric yellow. (a) True (b) False
39. 39.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) plain water (d) detergent water

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