Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 452 · 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 number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) white paper strips (c) lemon juice (d) soap solution
5. 5.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.⚖️ 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
7. 7.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) tamarind water (d) soap solution
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
11. 11.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🛟 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
13. 13.🧺 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
14. 14.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
15. 15.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
16. 16.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
17. 17.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
18. 18.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) soap solution (d) a balloon
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) salt water (d) detergent water
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
24. 24.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) baking soda water (d) vinegar
25. 25.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution
26. 26.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
27. 27.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
28. 28.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
29. 29.🫧 Which of these is neutral? (a) salt water (b) tamarind water (c) lemon juice (d) orange juice
30. 30.🫧 Which of these is a base? (a) curd (b) sugar water (c) detergent water (d) salt water
31. 31.True or false: a magnet is needed for the turmeric test. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
33. 33.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
34. 34.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
36. 36.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
37. 37.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) vinegar (d) salt water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
40. 40.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed

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