Turmeric Indicator Experiment Worksheet

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

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