Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 786 · 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 kind of juice”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) fresh cream (c) a jar with a tight lid (d) yeast
3. 3.🛟 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
4. 4.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rub it hard (d) rinse with clean water
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of salt (b) sunny or shady place (c) days to see crystals
6. 6.True or false: vinegar is something yeast needs. (a) False (b) True
7. 7.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) a mirror (c) a cotton bud (d) an adult with an iron
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the same jar (c) the cream temperature
10. 10.🧈 What is the watery liquid left after the butter forms? (a) honey (b) vinegar (c) oil (d) buttermilk
11. 11.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is the one thing we change. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) air (b) warmth (c) soil (d) water
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
14. 14.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a balloon (c) a cotton bud (d) turmeric powder
15. 15.🫧 Which of these is neutral? (a) lemon juice (b) curd (c) plain water (d) orange juice
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) the same bottle (c) the amount of vinegar (d) spoons of baking soda
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) a mirror (d) vinegar
18. 18.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) lemon juice (c) a magnet (d) yeast
19. 19.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
21. 21.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the same bottle (c) the kind of balloon (d) the amount of vinegar
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) sugar (c) soil (d) salt
25. 25.🧺 Do we need vinegar for the fizzy balloon? (a) needed (b) not needed
26. 26.True or false: take in water from soil is a job of the flower. (a) True (b) False
27. 27.True or false: sugar water is neutral. (a) True (b) False
28. 28.True or false: a bowl is needed for making butter. (a) True (b) False
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a bowl (c) a timer (d) a magnet
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a rubber band (c) a mirror (d) a few hours
32. 32.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a magnet (c) warm water (d) dry yeast
33. 33.🫧 Which of these is an acid? (a) sugar water (b) lemon juice (c) baking soda water (d) soap solution
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) no, salt passes through (d) yes, all of it
36. 36.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) it fills with soil (d) much less water
37. 37.🧺 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
38. 38.True or false: ironing the paper is a job for an adult. (a) False (b) True
39. 39.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) powder (c) thick whipped cream (d) clear water
40. 40.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they become magnets (c) they react (d) they freeze

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