Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 668 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
2. 2.True or false: yeast is needed for the turmeric test. (a) True (b) False
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a battery cell (d) turmeric powder
4. 4.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
5. 5.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
6. 6.🛟 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
7. 7.🫧 Which of these is neutral? (a) plain water (b) soap solution (c) lemon juice (d) vinegar
8. 8.True or false: lemon juice is neutral. (a) True (b) False
9. 9.True or false: soap solution is needed for the turmeric test. (a) False (b) True
10. 10.True or false: sugar water is a base. (a) True (b) False
11. 11.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) soap solution (d) baking soda water
13. 13.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
16. 16.True or false: detergent water is neutral. (a) True (b) False
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
18. 18.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
19. 19.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
21. 21.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
23. 23.True or false: water is not needed for the turmeric test. (a) False (b) True
24. 24.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) lemon juice (d) a dropper or spoon
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
26. 26.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
27. 27.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
30. 30.True or false: salt water is an acid. (a) True (b) False
31. 31.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) white paper strips (c) turmeric powder (d) water
32. 32.🫧 Which of these is neutral? (a) sugar water (b) detergent water (c) soap solution (d) tamarind water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
34. 34.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
35. 35.🫧 Which of these is neutral? (a) vinegar (b) baking soda water (c) salt water (d) lemon juice
36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) vinegar (d) lemon juice
38. 38.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
39. 39.⚖️ 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
40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown

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