Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 887 · 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.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) tamarind water (d) plain water
2. 2.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
5. 5.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
6. 6.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
7. 7.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the liquid we test (d) the number of drops
9. 9.⚖️ 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
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) tamarind water (d) plain water
11. 11.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
12. 12.🫧 Which of these is neutral? (a) detergent water (b) soap solution (c) vinegar (d) salt water
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
15. 15.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
17. 17.True or false: soap solution keeps turmeric yellow. (a) True (b) False
18. 18.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
19. 19.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
20. 20.⚖️ 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 liquid we test (c) the light we look in (d) the colour we see
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) white paper strips
22. 22.🔮 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
23. 23.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
27. 27.True or false: soap solution is needed for the turmeric test. (a) True (b) False
28. 28.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
29. 29.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
32. 32.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.True or false: sugar water is a base. (a) True (b) False
35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
37. 37.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
38. 38.True or false: detergent water keeps turmeric yellow. (a) True (b) False
39. 39.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
40. 40.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) lemon juice (d) sugar water

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