Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 58 · 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.⚖️ 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
2. 2.True or false: baking soda water is a base. (a) False (b) True
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) white paper strips (d) a comb
4. 4.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
6. 6.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
8. 8.⚖️ 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
9. 9.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) baking soda water (d) tamarind water
10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
11. 11.True or false: sugar water is a base. (a) True (b) False
12. 12.True or false: soap solution keeps turmeric yellow. (a) False (b) True
13. 13.🧺 Which of these is needed for the turmeric test? (a) water (b) a mirror (c) a balloon (d) a battery cell
14. 14.True or false: a balloon is needed for the turmeric test. (a) True (b) False
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
16. 16.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
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 light we look in (c) the liquid we test
18. 18.🫧 Which of these is a base? (a) vinegar (b) salt water (c) sugar water (d) baking soda water
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
20. 20.True or false: a mirror is needed for the turmeric test. (a) True (b) False
21. 21.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
23. 23.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
24. 24.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a magnet (c) turmeric powder (d) lemon juice
25. 25.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
29. 29.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) salt water (d) plain water
31. 31.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
32. 32.⚖️ 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
33. 33.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
34. 34.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
35. 35.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
37. 37.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
38. 38.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
39. 39.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
40. 40.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron

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