Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 577 · 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 the one thing we change? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the number of drops
2. 2.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
4. 4.True or false: lemon juice is an acid. (a) True (b) False
5. 5.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
6. 6.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) orange juice (d) baking soda water
7. 7.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
9. 9.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
10. 10.True or false: baking soda water is neutral. (a) False (b) True
11. 11.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🫧 Which of these is an acid? (a) vinegar (b) baking soda water (c) sugar water (d) detergent water
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) yeast (d) soap solution
14. 14.True or false: water is not needed for the turmeric test. (a) True (b) False
15. 15.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
16. 16.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
18. 18.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) lemon juice (d) vinegar
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
22. 22.True or false: vinegar keeps turmeric yellow. (a) False (b) True
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) plain water (d) vinegar
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.⚖️ 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 change it (c) we measure it
26. 26.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
27. 27.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a magnet
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) white paper strips (d) soap solution
29. 29.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
30. 30.⚖️ 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
31. 31.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) detergent water
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🫧 Which of these is an acid? (a) salt water (b) tamarind water (c) plain water (d) soap solution
35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
36. 36.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
37. 37.True or false: tamarind water is neutral. (a) True (b) False
38. 38.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) yeast (d) white paper strips
39. 39.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) baking soda water (d) sugar water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True

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