Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 436 · 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.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
2. 2.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) tamarind water (d) plain water
4. 4.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a mirror (d) a shallow dish
7. 7.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
8. 8.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) lemon juice (d) white paper strips
10. 10.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the filter material (c) how clear the water is (d) the amount poured
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a piece of string (c) a shallow dish (d) a spoon
13. 13.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a magnet (d) yeast
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
15. 15.True or false: a seed is needed for the fizzy balloon. (a) False (b) True
16. 16.True or false: moong seeds is needed for sprouting seeds. (a) True (b) False
17. 17.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) turmeric powder (d) salt
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same glass (b) the filter material (c) the same muddy water (d) the amount poured
19. 19.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🫗 Which of these is done by filtering? (a) salt from sea water (b) husk from rice grain (c) bad grains from rice (d) tea leaves from tea
22. 22.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
23. 23.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to colour it (c) it is food for yeast (d) to make it sweet
24. 24.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same cotton bud (b) the ironing time (c) the same paper (d) the kind of juice
26. 26.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) soap solution (d) sugar water
27. 27.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a clear plastic bag (c) a rubber band (d) turmeric powder
28. 28.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
30. 30.🔍 Which is the odd one out? (a) a magnet (b) sunlight (c) salt (d) time
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) folding paper (d) baking a cake
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
34. 34.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) take in water from soil (c) make food in sunlight (d) hold up the leaves
35. 35.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
36. 36.True or false: a magnet is needed for the fizzy balloon. (a) True (b) False
37. 37.🧺 Do we need a comb for the fizzy balloon? (a) not needed (b) needed
38. 38.🍞 Which of these is something yeast needs? (a) warm water (b) sunlight (c) salt (d) a magnet
39. 39.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.True or false: dipping the cotton bud is a job for an adult. (a) True (b) False

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