Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 809 · 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 is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a battery cell (d) a balloon
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) a comb
7. 7.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
8. 8.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a magnet (c) a battery cell (d) a comb
9. 9.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
10. 10.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) plain water (d) lemon juice
11. 11.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a battery cell (d) lemon juice
13. 13.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
14. 14.🔮 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
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.⚖️ 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
17. 17.True or false: yeast is not needed for the turmeric test. (a) True (b) False
18. 18.🫧 Which of these is a base? (a) plain water (b) detergent water (c) tamarind water (d) lemon juice
19. 19.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
21. 21.True or false: salt water is an acid. (a) True (b) False
22. 22.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) white paper strips (d) water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a battery cell (d) white paper strips
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
28. 28.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) yeast (d) lemon juice
31. 31.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) bright blue (d) it stays white
33. 33.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
34. 34.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
36. 36.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a battery cell (d) water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the light we look in (d) the liquid we test
39. 39.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) white paper strips (d) a magnet
40. 40.⚖️ 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

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