Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 224 · 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.⚖️ 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
2. 2.🧺 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
3. 3.True or false: vinegar is an acid. (a) True (b) False
4. 4.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) soap solution (d) yeast
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a mirror (d) lemon juice
8. 8.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
10. 10.🫧 Which of these is a base? (a) plain water (b) detergent water (c) orange juice (d) salt water
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the number of drops
12. 12.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) vinegar (d) plain water
14. 14.True or false: detergent water keeps turmeric yellow. (a) False (b) True
15. 15.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
17. 17.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a mirror (d) turmeric powder
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
19. 19.🔮 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
20. 20.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) salt water (d) detergent water
21. 21.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
24. 24.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🫧 Which of these is a base? (a) orange juice (b) sugar water (c) soap solution (d) salt water
26. 26.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) turmeric powder (c) soap solution (d) white paper strips
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) lemon juice (d) water
28. 28.True or false: plain water is an acid. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
30. 30.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
32. 32.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
33. 33.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
35. 35.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
36. 36.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
37. 37.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
38. 38.⚖️ 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 colour we see (c) the number of drops (d) the light we look in
39. 39.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.⚖️ 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

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