Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 694 · 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.🍋 Which of these steps is a job for an adult? (a) writing the message (b) dipping the cotton bud (c) ironing the paper (d) reading the message
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon (d) the same bottle
3. 3.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a mirror (d) cotton or cloth
5. 5.🫧 Which of these is neutral? (a) sugar water (b) soap solution (c) lemon juice (d) baking soda water
6. 6.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a mirror (c) a dropper or spoon (d) lemon juice
7. 7.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) frozen (d) saturated
9. 9.True or false: a comb is needed for the yeast balloon. (a) True (b) False
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.True or false: seeds on wet cotton does not sprout. (a) False (b) True
12. 12.⚖️ 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
13. 13.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) musical (c) chemical (d) magnetic
14. 14.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
15. 15.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
16. 16.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) stem (c) leaves (d) flower
17. 17.🌱 Which of these sprouts in a few days? (a) wet seeds by a window (b) seeds in the freezer (c) boiled seeds (d) seeds on dry cotton
18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the same bottles (b) the amount of water (c) the water temperature (d) the amount of sugar
19. 19.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
20. 20.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
21. 21.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
22. 22.True or false: plain water is neutral. (a) False (b) True
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a balloon (d) warm water
24. 24.True or false: mud from water is done by sieving. (a) False (b) True
25. 25.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) seal it in a glass jar (c) put it in your mouth (d) shake it near your face
26. 26.🔍 Which is the odd one out? (a) salt (b) sunlight (c) vinegar (d) sugar
27. 27.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
28. 28.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
29. 29.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) time (b) vinegar (c) sugar (d) warm water
31. 31.True or false: a mirror is not needed for making butter. (a) False (b) True
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) how dark the writing is (b) the same paper (c) the ironing time (d) the kind of juice
33. 33.🍞 Which of these is something yeast needs? (a) a magnet (b) sunlight (c) sugar (d) salt
34. 34.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
35. 35.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) hydrogen (c) helium (d) oxygen
36. 36.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
38. 38.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a magnet (c) sugar (d) turmeric powder
39. 39.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a battery cell (d) yeast
40. 40.🛟 The water for the yeast should be ___. (a) boiling hot (b) ice cold (c) very salty (d) warm, not hot

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