Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 679 · 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.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
2. 2.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
4. 4.🧺 Do we need a mirror for the secret lemon message? (a) not needed (b) needed
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) make food in sunlight (c) take in water from soil (d) carry water upward
7. 7.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) a dropper or spoon (d) white paper strips
9. 9.📘 The browning of lemon juice with heat is a ___ change. (a) musical (b) chemical (c) physical (d) magnetic
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) the kind of balloon (c) spoons of baking soda (d) size of the balloon
11. 11.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is not needed for making butter? (a) a bowl (b) a timer (c) fresh cream (d) a battery cell
13. 13.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they sprout faster (b) they do not sprout (c) they grow fruit (d) they glow
14. 14.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) seeds on dry cotton (d) wet seeds in the dark
15. 15.True or false: writing the message is a job a child can do. (a) False (b) True
16. 16.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a magnet (c) baking soda (d) vinegar
19. 19.🧺 Which of these is needed for the fizzy balloon? (a) a tray for spills (b) a battery cell (c) sugar (d) a magnet
20. 20.True or false: orange juice is an acid. (a) False (b) True
21. 21.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) True (b) False
22. 22.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
23. 23.🍞 Why do we add sugar to the yeast? (a) to make it sweet (b) it is food for yeast (c) to make it heavy (d) to colour it
24. 24.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
25. 25.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
29. 29.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
30. 30.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they become magnets (c) they react (d) they freeze
31. 31.🧺 Do we need a battery cell for the secret lemon message? (a) not needed (b) needed
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
33. 33.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
34. 34.🫧 Which of these is a base? (a) sugar water (b) tamarind water (c) baking soda water (d) orange juice
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
36. 36.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) dipping the cotton bud (c) writing the message (d) putting the iron away
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the amount of vinegar (d) size of the balloon
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed

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