Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 699 · 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 the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a balloon (c) a funnel or spoon (d) a seed
2. 2.True or false: hold up the leaves is a job of the stem. (a) False (b) True
3. 3.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
5. 5.True or false: putting the iron away is a job for an adult. (a) False (b) True
6. 6.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
7. 7.⚖️ 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 filter material (d) how clear the water is
8. 8.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) True (b) False
9. 9.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
10. 10.True or false: a battery cell is not needed for making butter. (a) True (b) False
11. 11.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a battery cell (c) vinegar (d) a tray for spills
12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) glucose powder (d) cooking oil
13. 13.True or false: a small bowl is not needed for the secret lemon message. (a) False (b) True
14. 14.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) steam (d) carbon dioxide gas
15. 15.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a mirror (d) cotton or cloth
16. 16.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) it turns to bread (c) the balloon is bigger (d) the balloon is smaller
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) salt (b) water (c) warmth (d) air
23. 23.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) salt from sea water (c) bran from wheat flour (d) tea leaves from tea
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
25. 25.True or false: water is needed for a seed to sprout. (a) True (b) False
26. 26.🧺 Do we need yeast for making butter? (a) needed (b) not needed
27. 27.True or false: a potted plant is needed for the leafy bag test. (a) True (b) False
28. 28.🧂 Which of these does not dissolve in water? (a) chalk powder (b) glucose powder (c) table salt (d) sugar
29. 29.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
30. 30.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) lemon juice (c) a battery cell (d) white paper
31. 31.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) empty (d) frozen
32. 32.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) baking soda water (d) soap solution
33. 33.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a bowl (c) a mirror (d) a jar with a tight lid
34. 34.True or false: folding paper is a change that cannot be undone. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon
37. 37.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) lemon juice (d) detergent water
38. 38.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
39. 39.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🔍 What do you see after shaking cream in a jar for a long time? (a) bubbles of gas (b) sugar crystals (c) clear water only (d) lumps of butter

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