Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 363 · 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: soap solution is not needed for the turmeric test. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
3. 3.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) salt water (d) baking soda water
4. 4.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
6. 6.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
7. 7.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) lemon juice (d) plain water
8. 8.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.🫧 Which of these is an acid? (a) lemon juice (b) detergent water (c) sugar water (d) baking soda water
11. 11.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) water (d) turmeric powder
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
14. 14.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
18. 18.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
19. 19.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) soap solution (c) lemon juice (d) tamarind water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
22. 22.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) plain water (d) sugar water
24. 24.🍋 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 disappears (d) it turns blue
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
27. 27.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
28. 28.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) white paper strips (d) lemon juice
30. 30.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) detergent water (d) salt water
32. 32.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a balloon (c) soap solution (d) turmeric powder
34. 34.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
35. 35.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) soap solution (d) a mirror
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
38. 38.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
39. 39.True or false: a mirror is needed for the turmeric test. (a) False (b) True
40. 40.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid

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