Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 882 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
2. 2.True or false: orange juice is a base. (a) False (b) True
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) shake it near your face (c) keep it away from eyes (d) seal it in a glass jar
5. 5.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
6. 6.True or false: seeds on wet cotton does not sprout. (a) False (b) True
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) turmeric powder
9. 9.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
10. 10.True or false: wet seeds in the dark does not sprout. (a) True (b) False
11. 11.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
12. 12.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) throw them at friends (c) never put seeds in mouth (d) eat a few to check
13. 13.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
15. 15.🧺 Which of these is needed for making butter? (a) a jar with a tight lid (b) a battery cell (c) a magnet (d) turmeric powder
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a clean glass (c) muddy water (d) sand and pebbles
18. 18.🔮 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
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.True or false: a magnet is not needed for the fizzy balloon. (a) False (b) True
21. 21.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of water (b) the same bottles (c) the amount of sugar (d) the water temperature
23. 23.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) plain water (d) salt water
24. 24.🔍 Which is the odd one out? (a) putting the iron away (b) cutting the lemon (c) plugging in the iron (d) dipping the cotton bud
25. 25.🔍 Which is the odd one out? (a) air (b) warmth (c) water (d) salt
26. 26.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is what we measure. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
28. 28.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
29. 29.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a rolling pin (b) a pressure cooker (c) a mathani (churner) (d) a sieve
30. 30.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
32. 32.🌱 Which of these sprouts in a few days? (a) wet seeds by a window (b) seeds on dry cotton (c) boiled seeds (d) seeds in the freezer
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it turns to sugar (c) the yeast is killed (d) it grows faster
36. 36.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
38. 38.True or false: a battery cell is needed for making butter. (a) True (b) False
39. 39.True or false: a battery cell is needed for sprouting seeds. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) sugar (b) table salt (c) baking soda (d) sawdust

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