Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 543 · 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: tamarind water keeps turmeric yellow. (a) False (b) True
2. 2.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
8. 8.🛟 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
9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
10. 10.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
12. 12.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
14. 14.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) turmeric powder (d) a comb
17. 17.🛟 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
18. 18.True or false: vinegar keeps turmeric yellow. (a) False (b) True
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
20. 20.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) orange juice (d) detergent water
21. 21.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
24. 24.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
25. 25.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a mirror (c) a comb (d) yeast
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) baking soda water (c) lemon juice (d) sugar water
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) turmeric powder (c) water (d) a dropper or spoon
30. 30.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) sugar water (d) lemon juice
31. 31.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
32. 32.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) plain water
33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
36. 36.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
37. 37.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) white paper strips (d) a dropper or spoon
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a dropper or spoon (d) a magnet

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