Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 265 · 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.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.True or false: turmeric powder 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 measure it (b) we keep it the same (c) we change it
5. 5.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
7. 7.True or false: salt water is an acid. (a) True (b) False
8. 8.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
9. 9.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
10. 10.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) vinegar
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
13. 13.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
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.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🛟 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
19. 19.True or false: soap solution is needed for the turmeric test. (a) False (b) True
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) lemon juice (d) baking soda water
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
22. 22.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
23. 23.True or false: vinegar is a base. (a) False (b) True
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
25. 25.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a comb (d) a dropper or spoon
26. 26.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) a dropper or spoon
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) soap solution (d) vinegar
28. 28.True or false: water is needed for the turmeric test. (a) False (b) True
29. 29.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
30. 30.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
31. 31.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) lemon juice (d) water
32. 32.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) lemon juice (d) a mirror
33. 33.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) white paper strips (d) yeast
34. 34.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
35. 35.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
38. 38.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.True or false: sugar water is neutral. (a) False (b) True
40. 40.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True

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