Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 789 · 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 needed for the yeast balloon? (a) a magnet (b) a small bottle (c) a paper clip (d) a comb
2. 2.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
3. 3.True or false: plugging in the iron is a job for an adult. (a) False (b) True
4. 4.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
7. 7.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
8. 8.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) an ingredient ran out (c) the gas froze (d) the bottle got tired
9. 9.🧺 Which of these is not needed for the yeast balloon? (a) a paper clip (b) a balloon (c) warm water (d) sugar
10. 10.🔍 Which is the odd one out? (a) warmth (b) water (c) air (d) sunlight
11. 11.True or false: yeast is needed for making butter. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) sawdust (d) sand
13. 13.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a battery cell (c) a clear plastic bag (d) a rubber band
14. 14.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a paper clip (b) sugar (c) warm water (d) dry yeast
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) yeast (d) turmeric powder
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) True (b) False
17. 17.🌱 Seeds need water, air and ___ to sprout. (a) salt (b) sugar (c) warmth (d) soil
18. 18.🧺 Which of these is needed for making butter? (a) a mirror (b) fresh cream (c) a battery cell (d) turmeric powder
19. 19.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
20. 20.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) reading the message (c) plugging in the iron (d) writing the message
21. 21.🪴 Which part of a plant does this job: hold up the leaves? (a) flower (b) leaves (c) stem (d) roots
22. 22.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so air gets out (c) so cream does not spill (d) so it turns yellow
23. 23.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it is sticky (c) it can burn skin (d) it is cold
24. 24.True or false: a rubber band is needed for the leafy bag test. (a) True (b) False
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
26. 26.True or false: ironing the paper is a job a child can do. (a) True (b) False
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) how dark the writing is (b) the iron setting (c) the kind of juice (d) the ironing time
28. 28.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
29. 29.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
30. 30.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
31. 31.🫗 Which of these is done by winnowing? (a) mud from water (b) tea leaves from tea (c) sugar from sugar water (d) chaff from wheat grain
32. 32.True or false: a balloon is not needed for making butter. (a) True (b) False
33. 33.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) True (b) False
35. 35.True or false: a rubber band is not needed for the leafy bag test. (a) False (b) True
36. 36.🍋 Secret message: who does this step — writing the message? (a) a child can do it (b) an adult does it
37. 37.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a balloon (c) a small bottle (d) a mirror
38. 38.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is kept the same. (a) False (b) True
39. 39.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.True or false: a mirror is needed for the turmeric test. (a) True (b) False

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