Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 683 · 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.True or false: salt water is a base. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) soap solution (d) baking soda water
3. 3.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
4. 4.🫧 Which of these is neutral? (a) sugar water (b) tamarind water (c) soap solution (d) baking soda water
5. 5.True or false: curd is a base. (a) True (b) False
6. 6.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) soap solution (d) a balloon
7. 7.True or false: water is not needed for the turmeric test. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
9. 9.🔮 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) reddish (d) green
10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
13. 13.True or false: salt water keeps turmeric yellow. (a) True (b) False
14. 14.True or false: soap solution is a base. (a) False (b) True
15. 15.🟡 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
16. 16.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
17. 17.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
20. 20.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) water (d) a balloon
22. 22.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
23. 23.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🫧 Which of these is neutral? (a) tamarind water (b) lemon juice (c) plain water (d) vinegar
26. 26.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) plain water (d) vinegar
28. 28.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) baking soda water (d) salt water
30. 30.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
31. 31.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) lemon juice (d) vinegar
32. 32.🔮 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
33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a battery cell (d) lemon juice
34. 34.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
36. 36.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a magnet (c) a balloon (d) yeast
37. 37.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
39. 39.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a dropper or spoon (d) a battery cell

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