Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 350 · 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 more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the same bottle (c) the amount of vinegar (d) the kind of balloon
2. 2.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
4. 4.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
5. 5.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it can block breathing (c) it is too big (d) it changes colour
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of sugar (c) the water temperature (d) the amount of yeast
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
8. 8.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
9. 9.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a small bottle (c) a battery cell (d) a balloon
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) cotton or cloth (d) a balloon
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
12. 12.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
13. 13.🧺 Do we need a mirror for sprouting seeds? (a) needed (b) not needed
14. 14.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
15. 15.True or false: a mirror is needed for the secret lemon message. (a) True (b) False
16. 16.🧺 Which of these is not needed for making butter? (a) a timer (b) cold water to rinse (c) a bowl (d) a battery cell
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) how hard we shake (c) time to make butter (d) the cream temperature
18. 18.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
19. 19.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) sugar (c) an empty bottle (d) vinegar
21. 21.🪴 Which of these is a job of the roots? (a) carry water upward (b) make seeds (c) hold the plant in soil (d) hold up the leaves
22. 22.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is the one thing we change. (a) False (b) True
23. 23.True or false: a paper clip is needed for the yeast balloon. (a) False (b) True
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) a funnel or spoon (c) baking soda (d) vinegar
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a mirror (d) warm water
27. 27.🧺 Do we need fresh cream for making butter? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) letting the paper dry (b) putting the iron away (c) dipping the cotton bud (d) writing the message
30. 30.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) it turns to honey (c) the balloon bursts (d) very little fizzing
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the kind of juice (c) the same cotton bud
32. 32.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) sawdust (d) chalk powder
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a funnel (d) a magnet
37. 37.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.True or false: a mirror is not needed for the secret lemon message. (a) True (b) False
39. 39.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) gently, not too tight (c) with a hot glue gun (d) with sharp wire
40. 40.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) make seeds (c) carry water upward (d) take in water from soil

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