Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 303 · 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 a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) take in water from soil (c) make seeds (d) carry water upward
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a magnet (d) white paper strips
5. 5.🪴 Which part of a plant does this job: give out water vapour? (a) stem (b) leaves (c) roots (d) flower
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it glows in the dark (c) lots of fizzy bubbles (d) it turns to ice
8. 8.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
9. 9.🍞 Why do we add sugar to the yeast? (a) to make it sweet (b) to make it heavy (c) it is food for yeast (d) to colour it
10. 10.⚖️ 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 time we wait (c) sun or shade
11. 11.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) how dark the writing is (b) the same paper (c) the same cotton bud (d) the kind of juice
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) False (b) True
13. 13.🌱 Is sunlight needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
14. 14.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they melt (b) yes, they sprout (c) no, never (d) they turn to stones
15. 15.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a magnet (c) water (d) soap solution
16. 16.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
17. 17.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) filtering (d) handpicking
18. 18.⚖️ 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
19. 19.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) roots (c) leaves (d) flower
20. 20.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) still runny cream (c) ghee (d) cheese
21. 21.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
22. 22.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a few days (c) a magnet (d) a small bowl
23. 23.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a mirror (c) a shallow dish (d) salt
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a piece of string (d) a magnet
26. 26.⚖️ 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 light we look in (c) the number of drops (d) the turmeric paper
27. 27.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of sugar (c) the amount of yeast (d) the water temperature
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) vinegar (d) lemon juice
31. 31.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) False (b) True
32. 32.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
33. 33.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) glucose powder
34. 34.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) an adult with an iron (c) lemon juice (d) yeast
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
38. 38.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
39. 39.🍋 Why does the lemon writing turn brown with heat? (a) heat adds colour (b) the iron is brown (c) the juice scorches first (d) paper turns lemony
40. 40.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron

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