Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 867 · 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.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🌱 What comes out of a moong seed first when it sprouts? (a) a fruit (b) a flower (c) a thorn (d) a tiny root
5. 5.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) add baking soda (d) rub it hard
6. 6.True or false: a bowl is needed for making butter. (a) False (b) True
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) baking soda water (d) sugar water
8. 8.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) the paper floats (c) it gets darker (d) writing stays faint
9. 9.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
10. 10.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
11. 11.🧺 Do we need a mirror for the leafy bag test? (a) not needed (b) needed
12. 12.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) a dropper or spoon (d) turmeric powder
13. 13.🫧 Which of these is neutral? (a) salt water (b) vinegar (c) curd (d) baking soda water
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is kept the same. (a) False (b) True
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
17. 17.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a tray for spills (c) a mirror (d) sugar
18. 18.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
20. 20.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
21. 21.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
22. 22.🍞 Which of these is something yeast does not need? (a) time (b) vinegar (c) warm water (d) sugar
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
24. 24.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) blue words (c) almost nothing (d) dark brown words
25. 25.🧺 Which of these is not needed for the fizzy balloon? (a) sugar (b) vinegar (c) a balloon (d) baking soda
26. 26.True or false: soap solution is a base. (a) False (b) True
27. 27.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
28. 28.🍞 Which of these is something yeast needs? (a) warm water (b) a magnet (c) salt (d) sunlight
29. 29.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) False (b) True
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) tea stays behind (d) both stay behind
33. 33.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) a potted plant (d) a magnet
34. 34.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
35. 35.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) seeds in the freezer (c) seeds on wet cotton (d) wet seeds by a window
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a funnel (d) a mirror
37. 37.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) True (b) False
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
39. 39.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
40. 40.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a few days (c) cotton wool (d) yeast

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