Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 426 · 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 leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) turmeric powder (d) a few hours
2. 2.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
3. 3.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) a mirror (d) a rubber band
4. 4.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
6. 6.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) roots (c) leaves (d) stem
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) False (b) True
8. 8.🫧 Which of these is neutral? (a) plain water (b) soap solution (c) vinegar (d) detergent water
9. 9.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) wet or dry cotton (c) how many seeds sprout (d) the number of seeds
10. 10.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
11. 11.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a funnel (c) a mirror (d) a magnet
12. 12.True or false: a battery cell is not needed for the leafy bag test. (a) True (b) False
13. 13.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) a battery cell (c) a clear plastic bag (d) a mirror
14. 14.🍞 Which of these is something yeast does not need? (a) warm water (b) a magnet (c) time (d) sugar
15. 15.True or false: a magnet is needed for the fizzy balloon. (a) True (b) False
16. 16.📘 The browning of lemon juice with heat is a ___ change. (a) chemical (b) magnetic (c) musical (d) physical
17. 17.🧈 Before the butter appears, what does the cream turn into? (a) thick whipped cream (b) clear water (c) ice (d) powder
18. 18.🔍 Which is the odd one out? (a) sand (b) food colour (c) sugar (d) glucose powder
19. 19.🧺 Which of these is needed for making butter? (a) a magnet (b) yeast (c) turmeric powder (d) a jar with a tight lid
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) True (b) False
21. 21.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) warm water (d) vinegar
22. 22.🔍 Which is the odd one out? (a) soil (b) air (c) water (d) warmth
23. 23.🍋 What colour does the lemon writing turn when an adult warms it? (a) blue (b) white (c) brown (d) green
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a battery cell (d) a dropper or spoon
25. 25.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) gravel from fine sand (c) bad grains from rice (d) sugar from sugar water
28. 28.True or false: a paper clip is needed for the yeast balloon. (a) False (b) True
29. 29.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a magnet (c) sugar (d) an empty bottle
30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) the same bottle (c) spoons of baking soda (d) size of the balloon
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the kind of juice (c) the same paper
33. 33.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) ironing the paper (c) dipping the cotton bud (d) putting the iron away
34. 34.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a small bowl (c) an adult with an iron (d) a magnet
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) how clear the water is (c) the same glass (d) the filter material
36. 36.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) a mirror (d) a magnet
37. 37.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
38. 38.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
39. 39.🧺 Which of these is not needed for the fizzy balloon? (a) vinegar (b) sugar (c) baking soda (d) a balloon
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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