Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 476 · 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 number of drops (b) the colour we see (c) the liquid we test
2. 2.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) vinegar (d) detergent water
4. 4.⚖️ 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
5. 5.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
6. 6.True or false: soap solution is neutral. (a) True (b) False
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a magnet (c) a comb (d) a battery cell
10. 10.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the number of drops
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
13. 13.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
14. 14.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
16. 16.⚖️ 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 colour we see (c) the liquid we test (d) the number of drops
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it disappears (d) it turns yellow again
19. 19.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
20. 20.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) lemon juice (d) plain water
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) turmeric powder (d) yeast
22. 22.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
23. 23.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
24. 24.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) yeast (d) turmeric powder
25. 25.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a pulley (d) a magnet
26. 26.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
27. 27.🫧 Which of these is a base? (a) sugar water (b) plain water (c) tamarind water (d) detergent water
28. 28.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) vinegar (d) plain water
29. 29.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
30. 30.🫧 Which of these is a base? (a) baking soda water (b) lemon juice (c) vinegar (d) tamarind water
31. 31.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) orange juice (d) detergent water
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) plain water (c) lemon juice (d) soap solution
33. 33.True or false: a magnet is needed for the turmeric test. (a) False (b) True
34. 34.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) lemon juice (d) water
37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
38. 38.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) salt water (d) detergent water
39. 39.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
40. 40.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water

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