Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 696 · 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? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the turmeric paper
2. 2.🛟 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
3. 3.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
4. 4.⚖️ 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
5. 5.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
8. 8.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
10. 10.True or false: orange juice is an acid. (a) True (b) False
11. 11.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🔮 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
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
14. 14.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
15. 15.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
16. 16.True or false: yeast is needed for the turmeric test. (a) False (b) True
17. 17.True or false: orange juice is a base. (a) False (b) True
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
19. 19.True or false: water is not needed for the turmeric test. (a) True (b) False
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a comb (d) turmeric powder
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) turmeric powder (d) water
22. 22.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) baking soda water (d) tamarind water
23. 23.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) a balloon (d) yeast
24. 24.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
25. 25.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) vinegar (d) sugar water
26. 26.True or false: plain water is a base. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a dropper or spoon (d) a magnet
29. 29.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a dropper or spoon (d) a battery cell
31. 31.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
32. 32.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.True or false: lemon juice is a base. (a) False (b) True
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) lemon juice (d) soap solution
36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
37. 37.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
38. 38.🫧 Which of these is neutral? (a) vinegar (b) plain water (c) detergent water (d) baking soda water
39. 39.True or false: soap solution keeps turmeric yellow. (a) False (b) True
40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed

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