Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 932 · 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 colour we see (b) the liquid we test (c) the turmeric paper
2. 2.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
4. 4.True or false: sugar water is neutral. (a) True (b) False
5. 5.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
6. 6.🛟 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
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) a magnet (d) yeast
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
11. 11.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a battery cell (d) water
13. 13.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
14. 14.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a battery cell (c) yeast (d) a balloon
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
16. 16.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a comb (d) water
17. 17.True or false: soap solution is needed for the turmeric test. (a) False (b) True
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) detergent water (d) vinegar
19. 19.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
20. 20.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
22. 22.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
26. 26.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
27. 27.True or false: salt water is an acid. (a) True (b) False
28. 28.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
29. 29.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) water (d) a battery cell
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) lemon juice (d) a comb
32. 32.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) plain water (d) salt water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the liquid we test
34. 34.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) yeast (d) white paper strips
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) turmeric powder (d) soap solution
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a mirror (c) white paper strips (d) water
38. 38.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) plain water (d) soap solution
39. 39.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False

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