Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 571 · 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 — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is cold (c) it is magnetic (d) it can burn skin
3. 3.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) germination (c) reflection (d) transpiration
4. 4.🧺 Which of these is not needed for the fizzy balloon? (a) a battery cell (b) an empty bottle (c) vinegar (d) baking soda
5. 5.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
6. 6.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
7. 7.True or false: salt water keeps turmeric yellow. (a) False (b) True
8. 8.🪴 Which of these is a job of the roots? (a) make seeds (b) make food in sunlight (c) give out water vapour (d) hold the plant in soil
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.True or false: hold the plant in soil is a job of the roots. (a) False (b) True
11. 11.🪴 Which of these is a job of the leaves? (a) hold up the leaves (b) carry water upward (c) take in water from soil (d) make food in sunlight
12. 12.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of yeast (b) size of the balloon (c) the same bottles (d) the water temperature
14. 14.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) stomata (b) veins (c) roots (d) petals
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) yeast (c) turmeric powder (d) water
16. 16.True or false: carry water upward is a job of the leaves. (a) False (b) True
17. 17.True or false: a paper clip is not needed for the yeast balloon. (a) False (b) True
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) turmeric powder (c) cotton or cloth (d) muddy water
19. 19.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
20. 20.True or false: plugging in the iron is a job a child can do. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) rusting iron (b) melting butter (c) browning lemon ink (d) milk turning to curd
22. 22.True or false: salt from sea water is done by handpicking. (a) True (b) False
23. 23.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) turmeric powder (b) a few days (c) a small bowl (d) water
24. 24.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) True (b) False
26. 26.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
27. 27.True or false: cutting the lemon is a job for an adult. (a) True (b) False
28. 28.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) True (b) False
29. 29.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it turns blue (c) there is no change (d) it shrinks
30. 30.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) tiny water drops (c) salt crystals (d) nothing at all
31. 31.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
32. 32.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is smaller (c) it shrinks to nothing (d) the balloon is bigger
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of salt (b) days to see crystals (c) sunny or shady place
34. 34.True or false: sunlight is not needed for a seed to sprout. (a) False (b) True
35. 35.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
36. 36.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is what we measure. (a) False (b) True
38. 38.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a magnet (c) a balloon (d) warm water
40. 40.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral

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