Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 915 · 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: detergent water keeps turmeric yellow. (a) False (b) True
2. 2.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
5. 5.True or false: orange juice is a base. (a) True (b) False
6. 6.🔮 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
7. 7.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
8. 8.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
9. 9.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
10. 10.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a battery cell (d) water
11. 11.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) lemon juice (d) tamarind water
12. 12.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) turmeric powder (d) a magnet
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a mirror (d) a dropper or spoon
14. 14.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) sugar water (d) plain water
15. 15.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) tamarind water (d) baking soda water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the light we look in
18. 18.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
19. 19.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it turns blue (d) it disappears
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
21. 21.True or false: a balloon is needed for the turmeric test. (a) True (b) False
22. 22.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
24. 24.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) soap solution (d) water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
28. 28.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism
29. 29.True or false: yeast is not needed for the turmeric test. (a) True (b) False
30. 30.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.True or false: tamarind water is a base. (a) False (b) True
35. 35.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: a comb is needed for the turmeric test. (a) True (b) False
38. 38.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
39. 39.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base

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