Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 833 · 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: salt water is neutral. (a) True (b) False
2. 2.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
5. 5.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) lemon juice (d) white paper strips
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) water (d) a dropper or spoon
7. 7.True or false: plain water keeps turmeric yellow. (a) False (b) True
8. 8.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
9. 9.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.⚖️ 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 change it (c) we measure it
12. 12.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) soap solution (c) a magnet (d) a mirror
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the liquid we test
14. 14.True or false: plain water is neutral. (a) True (b) False
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) a dropper or spoon (d) water
16. 16.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) detergent water (d) lemon juice
17. 17.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a pulley (d) a magnet
18. 18.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) plain water
19. 19.True or false: curd is an acid. (a) True (b) False
20. 20.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
21. 21.True or false: detergent water keeps turmeric yellow. (a) False (b) True
22. 22.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
24. 24.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) detergent water (d) salt water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test 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) bright blue (b) reddish (c) green (d) white at once
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the light we look in
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) detergent water (d) baking soda water
31. 31.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) white paper strips (d) a battery cell
32. 32.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) water (d) yeast
34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap is magnetic (d) soap water is a base
35. 35.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) tamarind water (d) salt water
38. 38.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see

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