Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 51 · 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.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) browning lemon ink (c) cooking an egg (d) baking a cake
2. 2.🫗 How do we separate sugar from sugar water? (a) filtering (b) handpicking (c) evaporating (d) sieving
3. 3.True or false: freezing water is a change that can be undone. (a) False (b) True
4. 4.True or false: a mirror is not needed for the leafy bag test. (a) False (b) True
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
6. 6.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) False (b) True
7. 7.🌱 Which of these is not needed for a seed to sprout? (a) water (b) warmth (c) air (d) salt
8. 8.🫧 Which of these is neutral? (a) curd (b) plain water (c) detergent water (d) tamarind water
9. 9.🔍 Which is the odd one out? (a) a magnet (b) time (c) warm water (d) sugar
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) turmeric powder (d) a clean glass
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same muddy water (c) the filter material
12. 12.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a clear plastic bag (c) a magnet (d) a rubber band
13. 13.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) almost nothing (c) dark brown words (d) blue words
14. 14.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) a small bottle (c) warm water (d) dry yeast
15. 15.True or false: moong seeds is not needed for sprouting seeds. (a) False (b) True
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) with sharp wire (d) gently, not too tight
18. 18.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) steam (d) carbon dioxide gas
19. 19.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) putting the iron away (c) letting the paper dry (d) ironing the paper
20. 20.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) never put seeds in mouth (c) eat a few to check (d) throw them at friends
21. 21.🧈 Which of these is a change that can be undone? (a) folding paper (b) cooking an egg (c) rusting iron (d) baking a cake
22. 22.True or false: a bowl is not needed for making butter. (a) True (b) False
23. 23.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
24. 24.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) yeast (c) lemon juice (d) a cotton bud
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) cotton or cloth (d) a balloon
26. 26.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a clear plastic bag (c) sunlight (d) a magnet
27. 27.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) small stones from dal (c) chaff from wheat grain (d) husk from rice grain
28. 28.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the kind of plant (c) sun or shade (d) the same kind of bag
29. 29.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
30. 30.🪴 Which part of a plant does this job: make seeds? (a) flower (b) stem (c) roots (d) leaves
31. 31.🍞 Where is yeast used in the kitchen? (a) to wash dishes (b) to make bread rise (c) to colour rice (d) to clean floors
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
33. 33.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
34. 34.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a magnet (c) vinegar (d) baking soda
35. 35.🧺 Which of these is needed for the secret lemon message? (a) a cotton bud (b) a battery cell (c) a balloon (d) turmeric powder
36. 36.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) cooking oil (d) food colour
37. 37.🧺 Do we need a small bowl for sprouting seeds? (a) needed (b) not needed
38. 38.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) False (b) True
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) food colour (d) table salt

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