Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 791 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) white paper strips (d) water
2. 2.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
3. 3.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) white paper strips (d) a dropper or spoon
6. 6.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
7. 7.True or false: tamarind water is a base. (a) False (b) True
8. 8.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
9. 9.🫧 Which of these is a base? (a) detergent water (b) tamarind water (c) salt water (d) vinegar
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
11. 11.⚖️ 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
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) vinegar (d) baking soda water
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) soap solution (c) sugar water (d) vinegar
14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
15. 15.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
16. 16.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
17. 17.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
19. 19.True or false: orange juice is neutral. (a) True (b) False
20. 20.🛟 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
21. 21.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) lemon juice (d) salt water
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) bright blue (d) white at once
25. 25.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) soap solution (d) plain water
26. 26.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) soap solution (d) lemon juice
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) turmeric powder (d) a magnet
28. 28.True or false: a dropper or spoon 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 colour we see is what we measure. (a) True (b) False
30. 30.True or false: lemon juice is neutral. (a) False (b) True
31. 31.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
33. 33.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) lemon juice (d) a balloon
35. 35.⚖️ 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 number of drops (c) the turmeric paper (d) the liquid we test
36. 36.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
37. 37.⚖️ 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
38. 38.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
40. 40.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown

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