Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 515 · 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.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
3. 3.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) soap solution (d) detergent water
4. 4.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) a battery cell (d) a comb
5. 5.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
6. 6.🟡 Which of these keeps turmeric yellow? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
7. 7.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) salt water (d) plain water
8. 8.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
9. 9.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the colour we see
11. 11.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
12. 12.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water
14. 14.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
15. 15.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) soap solution (d) white paper strips
17. 17.⚖️ 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
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
19. 19.🫧 Which of these is neutral? (a) baking soda water (b) vinegar (c) salt water (d) tamarind water
20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a magnet (d) turmeric powder
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.⚖️ 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
25. 25.🫧 Which of these is a base? (a) sugar water (b) salt water (c) vinegar (d) soap solution
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
27. 27.📘 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
28. 28.True or false: vinegar is neutral. (a) False (b) True
29. 29.True or false: vinegar keeps turmeric yellow. (a) True (b) False
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
31. 31.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a battery cell
34. 34.True or false: orange juice is an acid. (a) True (b) False
35. 35.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) sugar water (d) plain water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
40. 40.🫧 Which of these is a base? (a) salt water (b) baking soda water (c) curd (d) lemon juice

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