Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 714 · 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 rubber band (b) sunlight (c) a magnet (d) a clear plastic bag
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.True or false: a seed is not needed for the fizzy balloon. (a) False (b) True
4. 4.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
5. 5.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
6. 6.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is what we measure. (a) True (b) False
7. 7.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
8. 8.True or false: seeds on wet cotton does not sprout. (a) True (b) False
9. 9.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
10. 10.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) turmeric powder (d) a shallow dish
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) False (b) True
13. 13.True or false: a battery cell is needed for sprouting seeds. (a) True (b) False
14. 14.⚖️ 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
15. 15.🫗 Which of these is done by filtering? (a) small stones from dal (b) chaff from wheat grain (c) sugar from sugar water (d) tea leaves from tea
16. 16.True or false: lemon juice is a base. (a) True (b) False
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) False (b) True
18. 18.🍞 Which of these is something yeast needs? (a) vinegar (b) sunlight (c) a magnet (d) time
19. 19.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) the same glass (d) the amount poured
21. 21.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
22. 22.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
23. 23.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) warm water (d) sunlight
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.True or false: a few hours is needed for the leafy bag test. (a) True (b) False
27. 27.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) yeast (c) a jar with a tight lid (d) fresh cream
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.🛟 Who should use the hot iron in the secret message experiment? (a) only an adult (b) whoever is fastest (c) any child (d) the youngest child
30. 30.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) a mirror (c) a cotton bud (d) a battery cell
31. 31.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) gravel from fine sand (c) tea leaves from tea (d) sugar from sugar water
32. 32.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) cotton or cloth (d) a funnel
34. 34.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
36. 36.🌱 Where does a sprouting seed get its first food from? (a) the air (b) food stored in the seed (c) the cotton wool (d) the sunlight only
37. 37.True or false: reading the message is a job for an adult. (a) True (b) False
38. 38.🫧 Which of these is a base? (a) curd (b) orange juice (c) detergent water (d) lemon juice
39. 39.True or false: a few days is not needed for sprouting seeds. (a) True (b) False
40. 40.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids