Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 344 · 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.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) warm water (d) a balloon
3. 3.🧺 Which of these is not needed for the fizzy balloon? (a) sugar (b) vinegar (c) a funnel or spoon (d) a tray for spills
4. 4.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
5. 5.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
6. 6.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) vinegar (d) a magnet
7. 7.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) baking soda water (d) lemon juice
8. 8.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
9. 9.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
10. 10.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
11. 11.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) True (b) False
12. 12.True or false: a comb is needed for the fizzy balloon. (a) False (b) True
13. 13.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) smoke (c) carbon dioxide gas (d) air from outside
14. 14.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) a balloon (c) moong seeds (d) water
15. 15.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) yeast (d) white paper
17. 17.🛟 Why must children keep their fingers away from the iron? (a) it is cold (b) it can burn skin (c) it is magnetic (d) it is sticky
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the kind of balloon (c) the amount of vinegar (d) spoons of baking soda
19. 19.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) salt water (d) lemon juice
20. 20.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Which of these is not needed for sprouting seeds? (a) a small bowl (b) a battery cell (c) a few days (d) moong seeds
22. 22.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) the air (c) the cotton wool (d) food stored in the seed
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) False (b) True
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
25. 25.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) ironing the paper (c) reading the message (d) cutting the lemon
26. 26.🔍 What do you see after shaking cream in a jar for a long time? (a) lumps of butter (b) sugar crystals (c) bubbles of gas (d) clear water only
27. 27.True or false: a magnet is not needed for making butter. (a) False (b) True
28. 28.🍋 Secret message: who does this step — plugging in the iron? (a) an adult does it (b) a child can do it
29. 29.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
30. 30.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) more butter forms (c) it turns to cheese (d) no butter forms
31. 31.🫧 Which of these is neutral? (a) vinegar (b) lemon juice (c) plain water (d) curd
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) a balloon
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) True (b) False
36. 36.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for making butter? (a) a battery cell (b) a mirror (c) a bowl (d) yeast
38. 38.True or false: freezing water is a change that can be undone. (a) True (b) False
39. 39.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) lemon juice (c) an adult with an iron (d) a battery cell
40. 40.🔍 Which is the odd one out? (a) salt (b) sunlight (c) water (d) sugar

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