Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 960 · 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: tamarind water is a base. (a) True (b) False
2. 2.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
3. 3.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
4. 4.True or false: salt water is a base. (a) False (b) True
5. 5.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
6. 6.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
8. 8.True or false: orange juice is an acid. (a) False (b) True
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.True or false: orange juice is a base. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the colour we see
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🫧 Which of these is an acid? (a) soap solution (b) tamarind water (c) baking soda water (d) sugar water
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
15. 15.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) lemon juice
16. 16.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
17. 17.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
19. 19.True or false: sugar water keeps turmeric yellow. (a) True (b) False
20. 20.True or false: plain water is neutral. (a) True (b) False
21. 21.True or false: curd is an acid. (a) True (b) False
22. 22.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
23. 23.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
24. 24.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) yeast (d) a dropper or spoon
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
28. 28.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
30. 30.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
33. 33.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) water (c) white paper strips (d) turmeric powder
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) turmeric powder (c) a dropper or spoon (d) water
35. 35.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
36. 36.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is magnetic (d) soap is an acid
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) water (d) a dropper or spoon
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) a dropper or spoon (d) water
39. 39.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown

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