Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 615 · 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.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the number of drops (d) the colour we see
3. 3.🟡 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
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
6. 6.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
7. 7.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
8. 8.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) turmeric powder (d) soap solution
13. 13.🫧 Which of these is an acid? (a) orange juice (b) soap solution (c) detergent water (d) salt water
14. 14.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) detergent water (d) salt water
16. 16.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
18. 18.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
19. 19.🫧 Which of these is an acid? (a) detergent water (b) curd (c) plain water (d) sugar water
20. 20.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) vinegar (d) plain water
24. 24.True or false: curd is an acid. (a) False (b) True
25. 25.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) yeast (d) soap solution
26. 26.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
27. 27.🛟 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
28. 28.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a battery cell (d) a mirror
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.📘 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
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the light we look in (d) the liquid we test
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) lemon juice (d) a magnet
33. 33.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) vinegar (d) lemon juice
34. 34.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
36. 36.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
37. 37.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
38. 38.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
39. 39.True or false: soap solution is needed for the turmeric test. (a) True (b) False
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) water (d) a comb

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