Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 445 · 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: plain water turns turmeric reddish-brown. (a) False (b) True
2. 2.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
3. 3.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
4. 4.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) sugar water (d) vinegar
5. 5.🫧 Which of these is a base? (a) baking soda water (b) orange juice (c) sugar water (d) lemon juice
6. 6.True or false: water is needed for the turmeric test. (a) False (b) True
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) detergent water (d) tamarind water
11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
12. 12.True or false: orange juice is an acid. (a) True (b) False
13. 13.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a balloon (c) soap solution (d) white paper strips
15. 15.🫧 Which of these is an acid? (a) plain water (b) salt water (c) lemon juice (d) sugar water
16. 16.🛟 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
17. 17.⚖️ 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
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) sugar water (d) lemon juice
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a mirror (d) lemon juice
20. 20.⚖️ 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
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
23. 23.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
25. 25.True or false: soap solution keeps turmeric yellow. (a) True (b) False
26. 26.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a battery cell (d) a balloon
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) water (d) lemon juice
28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) soap solution (d) a battery cell
29. 29.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) a magnet
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a comb (d) soap solution
33. 33.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
34. 34.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
36. 36.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
38. 38.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
39. 39.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it disappears (d) it turns darker red
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral

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