Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 382 · 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.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
2. 2.True or false: a battery cell is needed for making butter. (a) False (b) True
3. 3.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) ignore it (d) rinse with clean water
4. 4.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a mirror (c) an empty bottle (d) a seed
5. 5.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) the same place (c) wet or dry cotton (d) how many seeds sprout
6. 6.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) how hard we shake (c) the cream temperature (d) time to make butter
7. 7.🔍 Which is the odd one out? (a) sugar (b) time (c) warm water (d) vinegar
8. 8.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
9. 9.🌱 Which of these sprouts in a few days? (a) seeds on wet cotton (b) seeds in the freezer (c) boiled seeds (d) seeds on dry cotton
10. 10.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a magnet (c) fresh cream (d) a timer
12. 12.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) dark green (b) blue (c) bright red (d) pale yellow
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
15. 15.🔍 Which is the odd one out? (a) dipping the cotton bud (b) writing the message (c) letting the paper dry (d) plugging in the iron
16. 16.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much more water (c) much less water (d) exactly the same
17. 17.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the kind of seeds (b) wet or dry cotton (c) how many seeds sprout
18. 18.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) False (b) True
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🫧 Which of these is a base? (a) lemon juice (b) sugar water (c) orange juice (d) baking soda water
22. 22.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.True or false: salt is something yeast needs. (a) False (b) True
26. 26.🍞 Which of these is something yeast needs? (a) salt (b) vinegar (c) sugar (d) a magnet
27. 27.True or false: make seeds is a job of the flower. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a piece of string (d) turmeric powder
30. 30.True or false: seeds on dry cotton does not sprout. (a) True (b) False
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) freezing water (d) browning lemon ink
34. 34.True or false: bad grains from rice is done by evaporating. (a) False (b) True
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) a piece of string (d) a shallow dish
36. 36.🫗 How do we separate small stones from dal? (a) sieving (b) handpicking (c) evaporating (d) winnowing
37. 37.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a magnet (c) a few hours (d) sunlight
38. 38.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is the one thing we change. (a) False (b) True
40. 40.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) skip washing

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