Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 356 · 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.True or false: a comb is needed for the fizzy balloon. (a) True (b) False
2. 2.🔮 Can the brown writing go back to being invisible? (a) yes, if cooled (b) yes, if shaken (c) yes, in the dark (d) no, it stays brown
3. 3.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it is sticky (c) it is cold (d) it can burn skin
4. 4.True or false: vinegar is not needed for the leafy bag test. (a) False (b) True
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) lemon juice (d) vinegar
6. 6.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) sand and pebbles (d) a funnel
8. 8.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) vinegar (c) a rubber band (d) sunlight
12. 12.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) glucose powder (d) baking soda
13. 13.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) sand is ground up (d) salt rains down
14. 14.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) melting ice (d) cooking an egg
15. 15.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
16. 16.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) the same bowls (c) the number of seeds (d) how many seeds sprout
17. 17.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) seeds in the freezer (c) wet seeds by a window (d) wet seeds in the dark
18. 18.True or false: cutting the lemon is a job for an adult. (a) True (b) False
19. 19.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
20. 20.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
22. 22.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it grows faster (c) the yeast is killed (d) it turns to sugar
23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) muddy water (d) turmeric powder
25. 25.🔍 Which is the odd one out? (a) letting the paper dry (b) cutting the lemon (c) reading the message (d) dipping the cotton bud
26. 26.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) helium (b) hydrogen (c) oxygen (d) carbon dioxide
27. 27.🍞 Which of these is something yeast does not need? (a) time (b) salt (c) sugar (d) warm water
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a magnet (c) a spoon (d) salt
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
31. 31.🍋 What colour does the lemon writing turn when an adult warms it? (a) white (b) brown (c) blue (d) green
32. 32.🧺 Which of these is needed for making butter? (a) fresh cream (b) a mirror (c) a balloon (d) a magnet
33. 33.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a funnel or spoon (c) a tray for spills (d) sugar
34. 34.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much less water (c) it fills with soil (d) much more water
35. 35.🍞 Which of these is something yeast needs? (a) vinegar (b) a magnet (c) sunlight (d) warm water
36. 36.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) sugar (c) sunlight (d) salt
37. 37.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) the cream temperature (c) the amount of cream (d) time to make butter
39. 39.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
40. 40.🪴 Where did the water inside the bag come from? (a) the plastic (b) the rain (c) the rubber band (d) the leaves

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