Turmeric Indicator Experiment Worksheet

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

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