Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 165 · 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.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
2. 2.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
6. 6.⚖️ 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
7. 7.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.True or false: salt water is a base. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
12. 12.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.⚖️ 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
14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
15. 15.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a battery cell (c) soap solution (d) lemon juice
17. 17.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
18. 18.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
19. 19.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) baking soda water (d) orange juice
20. 20.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a comb (d) a magnet
21. 21.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
22. 22.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) yeast (d) white paper strips
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
26. 26.🫧 Which of these is a base? (a) detergent water (b) plain water (c) vinegar (d) tamarind water
27. 27.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the light we look in
29. 29.True or false: soap solution is neutral. (a) False (b) True
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) white at once (d) bright blue
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) detergent water (d) lemon juice
32. 32.True or false: plain water keeps turmeric yellow. (a) True (b) False
33. 33.True or false: curd is a base. (a) False (b) True
34. 34.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) water (d) lemon juice
37. 37.True or false: vinegar keeps turmeric yellow. (a) False (b) True
38. 38.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
39. 39.True or false: detergent water is an acid. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids