Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 616 · 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 a bowl for making butter? (a) needed (b) not needed
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) throw it at a wall (c) pour it down the sink (d) keep it for a month
4. 4.🍞 Which of these is something yeast needs? (a) salt (b) vinegar (c) sunlight (d) sugar
5. 5.🧺 Do we need a mirror for sprouting seeds? (a) needed (b) not needed
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) the yeast is killed (c) it turns to sugar (d) it grows faster
8. 8.🪴 Which part of a plant does this job: carry water upward? (a) stem (b) roots (c) flower (d) leaves
9. 9.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same muddy water (c) the same funnel (d) the filter material
11. 11.🧈 What is the watery liquid left after the butter forms? (a) vinegar (b) buttermilk (c) oil (d) honey
12. 12.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a dropper or spoon (d) water
13. 13.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) no, it stays brown (c) yes, if shaken (d) yes, if cooled
14. 14.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) a cotton bud (c) white paper (d) lemon juice
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the amount of yeast (c) size of the balloon
17. 17.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) yeast (c) a cotton bud (d) lemon juice
19. 19.True or false: give out water vapour is a job of the leaves. (a) False (b) True
20. 20.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it very salty (c) to make it fizz (d) to cool the water
21. 21.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
22. 22.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) plain water (d) vinegar
23. 23.True or false: make seeds is a job of the roots. (a) False (b) True
24. 24.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) both the same (c) neither of them (d) the hot sunny day
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the cream temperature (b) the amount of cream (c) the same jar (d) time to make butter
26. 26.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) a funnel (d) a battery cell
28. 28.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a mirror (c) a few hours (d) a battery cell
29. 29.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
30. 30.True or false: melting ice is a change that cannot be undone. (a) True (b) False
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) an empty bottle (c) vinegar (d) sugar
32. 32.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
33. 33.🌱 Is sugar needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
34. 34.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a battery cell (c) a small bowl (d) a few days
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) cooking an egg (d) folding paper
37. 37.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
39. 39.True or false: cutting the lemon is a job a child can do. (a) False (b) True
40. 40.True or false: freezing water is a change that cannot be undone. (a) True (b) False

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