Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 531 · 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) lemon juice (b) yeast (c) soap solution (d) a dropper or spoon
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
3. 3.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is an acid (d) soap is hot
4. 4.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) detergent water (d) plain water
5. 5.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
6. 6.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
8. 8.🟡 Which of these keeps turmeric yellow? (a) plain water (b) detergent water (c) soap solution (d) baking soda water
9. 9.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) baking soda water (d) sugar water
12. 12.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
14. 14.True or false: a magnet is needed for the turmeric test. (a) True (b) False
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) detergent water (d) lemon juice
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) a dropper or spoon (d) soap solution
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
18. 18.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a magnet (d) white paper strips
20. 20.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
21. 21.⚖️ 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
22. 22.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a balloon (c) a comb (d) a battery cell
24. 24.True or false: plain water is a base. (a) True (b) False
25. 25.🔮 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
26. 26.⚖️ 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 turmeric paper (d) the light we look in
27. 27.True or false: a comb is not needed for the turmeric test. (a) True (b) False
28. 28.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) sugar water (d) vinegar
30. 30.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
31. 31.True or false: detergent water is an acid. (a) False (b) True
32. 32.🫧 Which of these is a base? (a) sugar water (b) soap solution (c) plain water (d) vinegar
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
36. 36.True or false: baking soda water is neutral. (a) True (b) False
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
39. 39.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
40. 40.🧺 Do we need water for the turmeric test? (a) needed (b) not needed

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