Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 587 · 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.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) yeast (c) sunlight (d) a potted plant
2. 2.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) turmeric powder (b) white paper (c) an adult with an iron (d) a small bowl
3. 3.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
4. 4.🌱 Which of these is needed for a seed to sprout? (a) salt (b) soil (c) sugar (d) water
5. 5.🎈 Why does the balloon blow up? (a) vinegar is hot (b) outside air gets in (c) gas is made inside (d) the bottle shrinks
6. 6.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
7. 7.True or false: baking soda is not needed for the fizzy balloon. (a) False (b) True
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) days to see crystals (c) the kind of salt (d) the same dish
9. 9.🔍 Which is the odd one out? (a) folding paper (b) baking a cake (c) rusting iron (d) browning lemon ink
10. 10.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it shrinks (c) it grows bigger (d) it turns blue
11. 11.⚖️ 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 water temperature (b) the amount of yeast (c) the same bottles (d) the amount of sugar
12. 12.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) sunlight (c) a potted plant (d) a mirror
13. 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) size of the balloon (c) the amount of vinegar (d) the same bottle
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the cream temperature (b) the same jar (c) the amount of cream (d) time to make butter
15. 15.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
16. 16.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a battery cell (c) a balloon (d) sugar
17. 17.🧺 Which of these is not needed for making butter? (a) a bowl (b) a balloon (c) a jar with a tight lid (d) fresh cream
18. 18.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) moong seeds (c) turmeric powder (d) a magnet
19. 19.🧈 What is the watery liquid left after the butter forms? (a) buttermilk (b) honey (c) vinegar (d) oil
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the kind of juice (c) the same cotton bud (d) the same paper
21. 21.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
22. 22.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) husk from rice grain (c) mud from water (d) small stones from dal
23. 23.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) seal it in a glass jar (d) shake it near your face
24. 24.⚖️ 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
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
26. 26.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
27. 27.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
28. 28.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) vinegar (d) sugar water
29. 29.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) vinegar (b) orange juice (c) curd (d) sugar water
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
32. 32.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
33. 33.🍞 Where is yeast used in the kitchen? (a) to make bread rise (b) to wash dishes (c) to clean floors (d) to colour rice
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
35. 35.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a piece of string (d) yeast
38. 38.🔍 Which is the odd one out? (a) salt water (b) plain water (c) curd (d) sugar water
39. 39.True or false: sugar is needed for the yeast balloon. (a) False (b) True
40. 40.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base

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