Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 232 · 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 kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
2. 2.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a magnet (d) a dropper or spoon
4. 4.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) tamarind water (c) plain water (d) vinegar
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
7. 7.True or false: yeast is not needed for the turmeric test. (a) False (b) True
8. 8.True or false: curd is neutral. (a) False (b) True
9. 9.⚖️ 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
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) sugar water (d) baking soda water
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
13. 13.🛟 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
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: salt water is neutral. (a) False (b) True
16. 16.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) a battery cell (d) soap solution
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the number of drops
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
19. 19.📘 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
20. 20.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) vinegar (d) tamarind water
21. 21.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
22. 22.⚖️ 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
23. 23.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
24. 24.🫧 Which of these is neutral? (a) plain water (b) detergent water (c) vinegar (d) lemon juice
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.🔮 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) green (d) reddish
27. 27.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
31. 31.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
32. 32.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
33. 33.⚖️ 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
34. 34.⚖️ 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 measure it (c) we change it
35. 35.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
36. 36.True or false: yeast is needed for the turmeric test. (a) False (b) True
37. 37.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) lemon juice (d) tamarind water
39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
40. 40.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform

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