Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 586 · 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.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) the hot sunny day (c) both the same (d) neither of them
3. 3.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is the one thing we change. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) sugar (b) table salt (c) baking soda (d) chalk powder
5. 5.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a tray for spills (c) a seed (d) a magnet
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
7. 7.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
8. 8.True or false: table salt does not dissolve in water. (a) True (b) False
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need fresh cream for making butter? (a) needed (b) not needed
11. 11.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) a huge eruption (c) very little fizzing (d) it turns to honey
12. 12.🔍 Which is the odd one out? (a) ironing the paper (b) cutting the lemon (c) dipping the cotton bud (d) plugging in the iron
13. 13.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) the size of the plant (c) sun or shade
14. 14.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
15. 15.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) oxygen (c) helium (d) hydrogen
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
18. 18.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) skip washing (c) wash your hands (d) rub your eyes
19. 19.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.🔍 Which is the odd one out? (a) cutting the lemon (b) writing the message (c) dipping the cotton bud (d) letting the paper dry
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
22. 22.True or false: white paper is needed for the secret lemon message. (a) False (b) True
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the same bottle (b) spoons of baking soda (c) size of the balloon
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a spoon (d) a balloon
25. 25.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
26. 26.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the same bottles (c) the water temperature
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) vinegar (c) salt water (d) plain water
29. 29.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) warm water (d) a battery cell
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Which of these is not needed for the leafy bag test? (a) a mirror (b) a potted plant (c) a few hours (d) sunlight
32. 32.🧺 Do we need a timer for making butter? (a) needed (b) not needed
33. 33.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
36. 36.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a comb (c) lemon juice (d) soap solution
37. 37.🍞 Which of these is something yeast needs? (a) sunlight (b) vinegar (c) time (d) salt
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.True or false: turmeric powder is needed for the secret lemon message. (a) True (b) False
40. 40.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a magnet (c) an adult with an iron (d) a cotton bud

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