Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 701 · 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 vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
2. 2.🫧 Which of these is a base? (a) soap solution (b) vinegar (c) salt water (d) sugar water
3. 3.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
4. 4.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
6. 6.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
8. 8.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) water (d) yeast
10. 10.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
13. 13.⚖️ 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
14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
15. 15.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
16. 16.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
17. 17.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
18. 18.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
20. 20.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) turmeric powder (d) water
22. 22.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) soap solution (d) a balloon
24. 24.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
26. 26.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) lemon juice (d) salt water
27. 27.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the liquid we test
29. 29.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a mirror (c) lemon juice (d) soap solution
30. 30.🫧 Which of these is an acid? (a) salt water (b) tamarind water (c) sugar water (d) baking soda water
31. 31.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.⚖️ 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
33. 33.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
34. 34.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
35. 35.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: sugar water is an acid. (a) False (b) True
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) sugar water (d) soap solution
39. 39.True or false: vinegar keeps turmeric yellow. (a) False (b) True
40. 40.True or false: vinegar is an acid. (a) False (b) True

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