Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 498 · 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 not needed for the fizzy balloon? (a) a balloon (b) a tray for spills (c) an empty bottle (d) a magnet
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) soap solution (d) lemon juice
3. 3.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) add baking soda (d) rub it hard
4. 4.True or false: salt water is an acid. (a) True (b) False
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bad grains from rice (c) bran from wheat flour (d) salt from sea water
7. 7.🧂 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) sugar (d) table salt
8. 8.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
9. 9.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
10. 10.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
11. 11.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a clear plastic bag (c) a rubber band (d) a magnet
12. 12.True or false: white paper is not needed for the secret lemon message. (a) False (b) True
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) True (b) False
14. 14.🧺 Do we need sugar for the fizzy balloon? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a cotton bud (c) lemon juice (d) turmeric powder
16. 16.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) salt eats water (d) the dish melts
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) sugar water (d) plain water
19. 19.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
20. 20.True or false: salt is something yeast does not need. (a) False (b) True
21. 21.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) False (b) True
23. 23.True or false: a balloon is not needed for sprouting seeds. (a) True (b) False
24. 24.True or false: a magnet is needed for sprouting seeds. (a) True (b) False
25. 25.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
26. 26.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
27. 27.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) salt (c) air (d) sunlight
28. 28.🌱 Where does a sprouting seed get its first food from? (a) food stored in the seed (b) the air (c) the cotton wool (d) the sunlight only
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
30. 30.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
32. 32.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is kept the same. (a) True (b) False
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a battery cell (b) a small bowl (c) lemon juice (d) a cotton bud
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) muddy water
35. 35.🧺 Do we need a balloon for the yeast balloon? (a) not needed (b) needed
36. 36.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) leaves (c) stem (d) roots
37. 37.⚖️ 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 amount of yeast (b) the water temperature (c) size of the balloon (d) the amount of water
38. 38.True or false: plugging in the iron is a job a child can do. (a) False (b) True
39. 39.True or false: orange juice is an acid. (a) False (b) True
40. 40.🌱 Which of these sprouts in a few days? (a) seeds on wet cotton (b) seeds in the freezer (c) seeds on dry cotton (d) boiled seeds

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