Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 607 · 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 plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the size of the plant (b) the same kind of bag (c) sun or shade (d) amount of water drops
2. 2.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) a balloon (d) soap solution
3. 3.True or false: vinegar is an acid. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) melting butter (b) browning lemon ink (c) dissolving salt (d) freezing water
5. 5.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to make bread rise (c) to wash dishes (d) to colour rice
6. 6.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a magnet (c) salt (d) a mirror
10. 10.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a few days (c) water (d) a magnet
11. 11.🫗 How do we separate bran from wheat flour? (a) sieving (b) winnowing (c) filtering (d) handpicking
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
13. 13.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) flower (c) leaves (d) roots
14. 14.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
15. 15.⚖️ 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
16. 16.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) seeds on dry cotton (c) seeds on wet cotton (d) wet seeds by a window
17. 17.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
18. 18.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it can block breathing (c) it changes colour (d) it is too big
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
20. 20.🧺 Which of these is needed for the fizzy balloon? (a) an empty bottle (b) a battery cell (c) a comb (d) a seed
21. 21.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) warm water (c) dry yeast (d) sugar
22. 22.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) helium (c) oxygen (d) hydrogen
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same glass (c) how clear the water is
24. 24.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) lemon juice (c) turmeric powder (d) a dropper or spoon
25. 25.🪴 Where did the water inside the bag come from? (a) the rain (b) the rubber band (c) the leaves (d) the plastic
26. 26.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
27. 27.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) the same bottle (c) size of the balloon (d) spoons of baking soda
29. 29.🌱 Which of these does not sprout? (a) seeds in the freezer (b) seeds on wet cotton (c) wet seeds by a window (d) wet seeds in the dark
30. 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the time we wait (b) the kind of plant (c) the same kind of bag (d) amount of water drops
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) the amount of vinegar (c) size of the balloon
32. 32.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) baking soda (d) sawdust
33. 33.True or false: cooking oil does not dissolve in water. (a) False (b) True
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🫧 Which of these is a base? (a) detergent water (b) salt water (c) curd (d) lemon juice
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) muddy water (d) yeast
37. 37.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
38. 38.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) vinegar (d) plain water
39. 39.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so air gets out (c) so it turns yellow (d) so cream does not spill
40. 40.🫗 How do we separate salt from sea water? (a) filtering (b) handpicking (c) sieving (d) evaporating

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