Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 415 · 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 is the odd one out? (a) soil (b) sugar (c) water (d) sunlight
2. 2.🔍 Which is the odd one out? (a) time (b) vinegar (c) salt (d) sunlight
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a bowl (c) a jar with a tight lid (d) a magnet
5. 5.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
6. 6.🔍 Which is the odd one out? (a) ironing the paper (b) writing the message (c) dipping the cotton bud (d) letting the paper dry
7. 7.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a small bottle (c) turmeric powder (d) a battery cell
8. 8.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) nothing at all (c) tiny water drops (d) salt crystals
9. 9.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) True (b) False
11. 11.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a battery cell (d) sand and pebbles
12. 12.🛟 What should you do after touching soil or seeds? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
13. 13.True or false: soap solution is an acid. (a) False (b) True
14. 14.True or false: a bowl is needed for making butter. (a) True (b) False
15. 15.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) True (b) False
16. 16.🌱 Which of these does not sprout? (a) wet seeds by a window (b) wet seeds in the dark (c) seeds on wet cotton (d) seeds on dry cotton
17. 17.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is sticky (c) it is cold (d) it is magnetic
18. 18.🧺 Which of these is not needed for making butter? (a) a timer (b) fresh cream (c) cold water to rinse (d) turmeric powder
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
21. 21.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
22. 22.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
23. 23.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) melting butter (d) browning lemon ink
24. 24.True or false: detergent water is neutral. (a) False (b) True
25. 25.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
26. 26.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) seeds on dry cotton (c) wet seeds by a window (d) boiled seeds
27. 27.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) sugar (c) a battery cell (d) a paper clip
28. 28.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
29. 29.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a potted plant (c) sunlight (d) a mirror
30. 30.True or false: turmeric powder is needed for making butter. (a) False (b) True
31. 31.True or false: folding paper is a change that cannot be undone. (a) True (b) False
32. 32.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) soil (c) warmth (d) salt
33. 33.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) moong seeds (c) yeast (d) water
34. 34.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) plain water (d) vinegar
35. 35.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) water (d) yeast
37. 37.⚖️ 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 amount of vinegar (c) size of the balloon (d) the same bottle
38. 38.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) a comb (c) a magnet (d) a balloon
39. 39.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) putting the iron away (d) letting the paper dry
40. 40.🧺 Do we need a small bowl for the secret lemon message? (a) needed (b) not needed

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