Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 471 · 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 is an acid. (a) False (b) True
2. 2.🫧 Which of these is a base? (a) plain water (b) tamarind water (c) lemon juice (d) detergent water
3. 3.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) salt water (d) lemon juice
4. 4.🛟 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
5. 5.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
6. 6.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
8. 8.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
9. 9.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) lemon juice (d) salt water
13. 13.True or false: yeast is not needed for the turmeric test. (a) False (b) True
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🫧 Which of these is a base? (a) lemon juice (b) tamarind water (c) plain water (d) soap solution
17. 17.⚖️ 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
18. 18.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) a dropper or spoon (d) turmeric powder
20. 20.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
22. 22.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a comb (c) white paper strips (d) soap solution
23. 23.🔮 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
24. 24.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) sugar water (d) plain water
26. 26.⚖️ 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 light we look in (c) the number of drops (d) the liquid we test
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the light we look in (d) the number of drops
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a mirror (d) water
29. 29.True or false: salt water is an acid. (a) False (b) True
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
31. 31.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
32. 32.True or false: vinegar is neutral. (a) True (b) False
33. 33.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) lemon juice (d) tamarind water
35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
36. 36.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
37. 37.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
38. 38.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) baking soda water (d) sugar water
39. 39.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.True or false: vinegar is an acid. (a) False (b) True

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