Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 636 · 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 turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) lemon juice (d) a dropper or spoon
2. 2.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) it turns to honey (d) the balloon bursts
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the kind of plant (b) amount of water drops (c) sun or shade (d) the size of the plant
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) white paper strips (d) a dropper or spoon
5. 5.🪴 Which part of a plant does this job: give out water vapour? (a) leaves (b) roots (c) flower (d) stem
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a mirror (d) white paper strips
7. 7.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) soap solution
9. 9.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
10. 10.🫧 Which of these is neutral? (a) detergent water (b) orange juice (c) salt water (d) lemon juice
11. 11.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) a balloon (d) a magnet
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
18. 18.🧺 Do we need lemon juice for the secret lemon message? (a) needed (b) not needed
19. 19.🍋 Why does the lemon writing turn brown with heat? (a) paper turns lemony (b) the juice scorches first (c) the iron is brown (d) heat adds colour
20. 20.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the hot sunny day (c) the cool cloudy day (d) neither of them
21. 21.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) glucose powder (d) cooking oil
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🧺 Which of these is not needed for the leafy bag test? (a) vinegar (b) a potted plant (c) sunlight (d) a rubber band
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) white paper strips (d) water
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) vinegar (c) a battery cell (d) baking soda
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) the same bottle (c) size of the balloon (d) the amount of vinegar
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is kept the same. (a) True (b) False
28. 28.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
29. 29.True or false: a mirror is not needed for making butter. (a) False (b) True
30. 30.🧺 Which of these is needed for sprouting seeds? (a) water (b) a balloon (c) a mirror (d) turmeric powder
31. 31.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) whoever is fastest (c) only an adult (d) the youngest child
32. 32.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) boiled seeds (c) seeds in the freezer (d) wet seeds by a window
33. 33.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) steam (c) air from outside (d) smoke
34. 34.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
36. 36.🧈 Why does shaking cream make butter? (a) the lid is warm (b) shaking adds salt (c) fat bits stick together (d) the jar adds butter
37. 37.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) rub your eyes (c) skip washing (d) wash your hands
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) curd (c) vinegar (d) lemon juice
39. 39.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) pour it down the sink (c) throw it at a wall (d) keep it for a month
40. 40.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) blue words (c) a rainbow (d) dark brown words

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