Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 596 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) yeast (c) a timer (d) a bowl
2. 2.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
3. 3.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a balloon (c) dry yeast (d) turmeric powder
4. 4.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
5. 5.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) baking soda water (d) tamarind water
7. 7.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) a magnet (d) muddy water
8. 8.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
9. 9.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is cold (c) it can burn skin (d) it is magnetic
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
11. 11.🧺 Do we need a battery cell for the secret lemon message? (a) needed (b) not needed
12. 12.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
13. 13.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
14. 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a rubber band (c) a few hours (d) a clear plastic bag
15. 15.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) lemon juice (d) soap solution
16. 16.🍞 Which of these is something yeast does not need? (a) sugar (b) a magnet (c) warm water (d) time
17. 17.True or false: small pebbles does not dissolve in water. (a) False (b) True
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
19. 19.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) a rainbow (c) almost nothing (d) dark brown words
20. 20.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
21. 21.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
22. 22.🧺 Which of these is not needed for sprouting seeds? (a) a magnet (b) cotton wool (c) a small bowl (d) moong seeds
23. 23.🧺 Which of these is needed for the secret lemon message? (a) a battery cell (b) an adult with an iron (c) yeast (d) turmeric powder
24. 24.True or false: yeast is needed for the leafy bag test. (a) True (b) False
25. 25.⚖️ 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 same bottles (b) the amount of yeast (c) the water temperature (d) the amount of sugar
26. 26.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) keep it away from eyes (c) put it in your mouth (d) seal it in a glass jar
27. 27.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
28. 28.⚖️ 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
29. 29.True or false: baking a cake is a change that can be undone. (a) True (b) False
30. 30.True or false: table salt dissolves in water. (a) False (b) True
31. 31.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) carbon dioxide (c) helium (d) oxygen
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the same jar (b) time to make butter (c) the amount of cream (d) the cream temperature
33. 33.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) a mirror (d) turmeric powder
34. 34.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) turmeric powder (c) a battery cell (d) white paper
35. 35.🧈 Which of these is a change that can be undone? (a) folding paper (b) browning lemon ink (c) baking a cake (d) cooking an egg
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a balloon (c) an empty bottle (d) sugar
37. 37.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) False (b) True
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the same muddy water
39. 39.🔍 Which is the odd one out? (a) cooking an egg (b) milk turning to curd (c) browning lemon ink (d) melting butter
40. 40.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True

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