Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 769 · 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: soap solution keeps turmeric yellow. (a) True (b) False
2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) plain water (d) tamarind water
4. 4.🔮 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
5. 5.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
6. 6.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) salt water (d) detergent water
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
11. 11.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the number of drops
15. 15.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) turmeric powder (d) a battery cell
16. 16.True or false: a mirror is needed for the turmeric test. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
18. 18.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a battery cell (d) white paper strips
20. 20.⚖️ 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
21. 21.True or false: water is not needed for the turmeric test. (a) True (b) False
22. 22.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
23. 23.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the turmeric paper
26. 26.🫧 Which of these is neutral? (a) soap solution (b) orange juice (c) plain water (d) detergent water
27. 27.🫧 Which of these is an acid? (a) detergent water (b) curd (c) salt water (d) plain water
28. 28.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
31. 31.True or false: a balloon is needed for the turmeric test. (a) False (b) True
32. 32.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
33. 33.True or false: plain water keeps turmeric yellow. (a) True (b) False
34. 34.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
35. 35.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a balloon (d) soap solution
37. 37.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
38. 38.True or false: lemon juice is neutral. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
40. 40.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water

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