Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 662 · 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.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the gas froze (c) an ingredient ran out (d) the bottle got tired
2. 2.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) white (c) brown (d) green
4. 4.🧺 Which of these is needed for making butter? (a) a magnet (b) a timer (c) a mirror (d) yeast
5. 5.True or false: vinegar is something yeast does not need. (a) False (b) True
6. 6.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) time (d) vinegar
7. 7.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is smaller (c) the balloon is bigger (d) it shrinks to nothing
8. 8.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
9. 9.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
10. 10.🧺 Do we need a seed for the fizzy balloon? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) a comb (c) a tray for spills (d) baking soda
12. 12.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
13. 13.True or false: take in water from soil is a job of the stem. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) cooking oil (d) sand
15. 15.True or false: sugar is needed for the fizzy balloon. (a) False (b) True
16. 16.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so air gets out (c) so cream does not spill (d) so it gets hot
17. 17.True or false: a jar with a tight lid is needed for making butter. (a) True (b) False
18. 18.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) digestion (c) germination (d) transpiration
19. 19.🧺 Which of these is needed for making butter? (a) yeast (b) a mirror (c) a jar with a tight lid (d) a magnet
20. 20.🪴 Which of these is a job of the stem? (a) carry water upward (b) give out water vapour (c) take in water from soil (d) make food in sunlight
21. 21.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of sugar
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
25. 25.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
26. 26.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) turmeric powder (c) a magnet (d) a battery cell
27. 27.🧺 Which of these is not needed for the fizzy balloon? (a) a seed (b) a balloon (c) baking soda (d) an empty bottle
28. 28.⚖️ 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
29. 29.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) wet or dry cotton (b) the same place (c) the kind of seeds (d) how many seeds sprout
30. 30.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a balloon (c) a magnet (d) a battery cell
32. 32.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) seal it in a glass jar (d) shake it near your face
33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
34. 34.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) turmeric powder (c) a magnet (d) a clear plastic bag
35. 35.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
37. 37.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
38. 38.⚖️ 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) False (b) True
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same funnel (d) the same muddy water
40. 40.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates

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