Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 670 · 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) a magnet (b) lemon juice (c) a dropper or spoon (d) turmeric powder
2. 2.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
4. 4.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
6. 6.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) a magnet (d) white paper strips
7. 7.🔍 Which is the odd one out? (a) plain water (b) salt water (c) detergent water (d) sugar water
8. 8.⚖️ 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 liquid we test (c) the number of drops (d) the turmeric paper
9. 9.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) detergent water (d) vinegar
10. 10.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a prism (d) a magnet
11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
12. 12.True or false: sugar water keeps turmeric yellow. (a) True (b) False
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a balloon (d) lemon juice
16. 16.⚖️ 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 change it (c) we measure it
17. 17.True or false: salt water is neutral. (a) False (b) True
18. 18.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
19. 19.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
20. 20.True or false: yeast is not needed for the turmeric test. (a) True (b) False
21. 21.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) plain water (d) soap solution
23. 23.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
24. 24.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) soap solution (d) vinegar
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
27. 27.True or false: orange juice is an acid. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
29. 29.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
30. 30.⚖️ 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
31. 31.True or false: vinegar keeps turmeric yellow. (a) True (b) False
32. 32.True or false: salt water is a base. (a) False (b) True
33. 33.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) water (d) a battery cell
34. 34.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) a battery cell (d) turmeric powder
35. 35.🫧 Which of these is neutral? (a) salt water (b) vinegar (c) baking soda water (d) lemon juice
36. 36.True or false: salt water keeps turmeric yellow. (a) True (b) False
37. 37.True or false: tamarind water is an acid. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
39. 39.⚖️ 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 liquid we test (d) the light we look in
40. 40.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False

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