Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 843 · 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 is an acid? (a) soap solution (b) vinegar (c) plain water (d) baking soda water
2. 2.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
3. 3.True or false: a balloon is not needed for making butter. (a) True (b) False
4. 4.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the cream temperature (c) the amount of cream (d) how hard we shake
5. 5.True or false: soap solution is a base. (a) False (b) True
6. 6.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) an indicator (d) a magnet
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) the kind of balloon (c) size of the balloon
8. 8.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is kept the same. (a) True (b) False
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a battery cell (d) cotton or cloth
10. 10.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
11. 11.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🫗 How do we separate small stones from dal? (a) winnowing (b) evaporating (c) filtering (d) handpicking
13. 13.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
14. 14.🧺 Which of these is not needed for the leafy bag test? (a) a mirror (b) a clear plastic bag (c) a potted plant (d) a rubber band
15. 15.True or false: rusting iron is a change that can be undone. (a) False (b) True
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
17. 17.True or false: bad grains from rice is done by sieving. (a) False (b) True
18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🧺 Do we need a battery cell for the fizzy balloon? (a) not needed (b) needed
21. 21.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) nothing at all (d) tiny water drops
22. 22.🍞 Which of these is something yeast does not need? (a) sugar (b) time (c) warm water (d) a magnet
23. 23.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) a funnel or spoon (c) vinegar (d) a balloon
25. 25.True or false: writing the message is a job for an adult. (a) False (b) True
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) a piece of string (d) a balloon
27. 27.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) vinegar (c) a rubber band (d) a mirror
28. 28.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the bottle got tired (c) the gas froze (d) an ingredient ran out
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a shallow dish (d) yeast
30. 30.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
31. 31.True or false: vinegar is needed for the fizzy balloon. (a) False (b) True
32. 32.🧺 Which of these is not needed for making butter? (a) fresh cream (b) cold water to rinse (c) a timer (d) yeast
33. 33.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a magnet (d) a clean glass
34. 34.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
35. 35.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
36. 36.🧺 Do we need yeast for making butter? (a) needed (b) not needed
37. 37.🌱 Which of these does not sprout? (a) boiled seeds (b) wet seeds by a window (c) seeds on wet cotton (d) wet seeds in the dark
38. 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a mirror (c) a few hours (d) sunlight
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the kind of salt (c) sunny or shady place (d) days to see crystals
40. 40.True or false: yeast is not needed for the turmeric test. (a) False (b) True

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