Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 935 · 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.True or false: sugar water is neutral. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) plain water (d) detergent water
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) plain water (d) baking soda water
4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
5. 5.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
6. 6.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) plain water (d) lemon juice
9. 9.🛟 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
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) water (d) a balloon
12. 12.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
13. 13.True or false: plain water is an acid. (a) True (b) False
14. 14.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
15. 15.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a comb (d) white paper strips
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
19. 19.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it disappears (d) it turns blue
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
21. 21.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) white paper strips (d) a comb
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) soap solution (d) yeast
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the light we look in
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
29. 29.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the light we look in
31. 31.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.True or false: a mirror is needed for the turmeric test. (a) False (b) True
34. 34.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
35. 35.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a battery cell (c) soap solution (d) white paper strips
38. 38.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
39. 39.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
40. 40.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) white paper strips (c) a mirror (d) a battery cell

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