Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 539 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) soap solution (d) a comb
2. 2.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
3. 3.⚖️ 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
4. 4.True or false: salt water keeps turmeric yellow. (a) True (b) False
5. 5.🛟 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
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (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? True or false: the turmeric paper is what we measure. (a) False (b) True
8. 8.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) turmeric powder (d) a comb
9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) orange juice (d) plain water
12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
13. 13.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the light we look in (d) the colour we see
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) turmeric powder (d) water
21. 21.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
22. 22.True or false: yeast is not needed for the turmeric test. (a) False (b) True
23. 23.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
24. 24.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
25. 25.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) a comb (d) white paper strips
26. 26.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
29. 29.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) white paper strips (d) soap solution
30. 30.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
36. 36.True or false: water is not needed for the turmeric test. (a) False (b) True
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) a dropper or spoon (d) white paper strips
38. 38.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
39. 39.True or false: salt water is a base. (a) True (b) False
40. 40.True or false: plain water keeps turmeric yellow. (a) False (b) True

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