Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 186 · 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.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
2. 2.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) air (c) water (d) soil
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
5. 5.📘 What do we call a seed starting to grow? (a) germination (b) condensation (c) evaporation (d) pollination
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.True or false: yeast is not needed for sprouting seeds. (a) False (b) True
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) make seeds (c) carry water upward (d) hold the plant in soil
12. 12.True or false: hold the plant in soil is a job of the roots. (a) True (b) False
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a funnel (d) yeast
14. 14.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of water (b) size of the balloon (c) the water temperature
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) blue words (b) almost nothing (c) dark brown words (d) a rainbow
17. 17.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) yeast (c) water (d) a small bowl
18. 18.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) dry juice is see-through (c) the paper ate it (d) it turned into air
19. 19.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
20. 20.⚖️ 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
21. 21.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
22. 22.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) plugging in the iron (c) letting the paper dry (d) writing the message
23. 23.True or false: water is needed for sprouting seeds. (a) True (b) False
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the iron setting (c) the same cotton bud (d) the ironing time
25. 25.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
26. 26.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny spheres (d) tiny stars
28. 28.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a magnet (c) fresh cream (d) a timer
29. 29.True or false: a mirror is not needed for the secret lemon message. (a) False (b) True
30. 30.🌱 Which of these does not sprout? (a) seeds in the freezer (b) wet seeds by a window (c) seeds on wet cotton (d) wet seeds in the dark
31. 31.🧺 Which of these is needed for sprouting seeds? (a) turmeric powder (b) a magnet (c) a balloon (d) cotton wool
32. 32.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) a magnet (d) lemon juice
34. 34.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) put it in your mouth (c) keep it for a month (d) pour it down the sink
35. 35.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is kept the same. (a) True (b) False
36. 36.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) salt (c) water (d) sugar
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the kind of juice (c) the ironing time
40. 40.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids