Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 946 · 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: soap solution is not needed for the turmeric test. (a) False (b) True
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
4. 4.True or false: soap solution is an acid. (a) True (b) False
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
6. 6.⚖️ 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
7. 7.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
8. 8.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) a magnet (d) a comb
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) salt water (d) baking soda water
10. 10.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) tamarind water (d) salt water
11. 11.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) water (d) yeast
12. 12.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
14. 14.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
15. 15.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
16. 16.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) soap solution (c) yeast (d) a comb
18. 18.True or false: plain water is neutral. (a) True (b) False
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a magnet
20. 20.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) white paper strips (d) a dropper or spoon
22. 22.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
24. 24.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
25. 25.True or false: salt water is a base. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) vinegar (d) salt water
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) detergent water (d) sugar water
29. 29.True or false: baking soda water is an acid. (a) False (b) True
30. 30.True or false: orange juice is an acid. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a mirror (d) soap solution
33. 33.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
35. 35.True or false: baking soda water is a base. (a) True (b) False
36. 36.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) soap solution (d) orange juice
37. 37.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a prism (d) a pulley
38. 38.True or false: a comb is not needed for the turmeric test. (a) False (b) True
39. 39.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False

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