Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 821 · 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.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) soap solution (d) a battery cell
3. 3.🫧 Which of these is a base? (a) baking soda water (b) orange juice (c) tamarind water (d) lemon juice
4. 4.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🧺 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
6. 6.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
8. 8.🫧 Which of these is an acid? (a) curd (b) salt water (c) baking soda water (d) soap solution
9. 9.⚖️ 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
10. 10.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
11. 11.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
14. 14.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
15. 15.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
17. 17.True or false: vinegar is a base. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) plain water (b) salt water (c) vinegar (d) baking soda water
19. 19.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
24. 24.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) yeast
26. 26.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) white paper strips (d) a comb
29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) turmeric powder (d) lemon juice
31. 31.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
32. 32.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
33. 33.📘 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
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
36. 36.🟡 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
37. 37.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
38. 38.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) a magnet (d) a comb
39. 39.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
40. 40.True or false: a mirror is needed for the turmeric test. (a) True (b) False

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