Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 717 · 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 is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
2. 2.True or false: warmth is needed for a seed to sprout. (a) True (b) False
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a mirror (d) yeast
4. 4.📘 The browning of lemon juice with heat is a ___ change. (a) magnetic (b) musical (c) chemical (d) physical
5. 5.🧺 Which of these is not needed for making butter? (a) yeast (b) a bowl (c) a jar with a tight lid (d) a timer
6. 6.True or false: a balloon is needed for the fizzy balloon. (a) True (b) False
7. 7.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
8. 8.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) turmeric powder (c) a balloon (d) warm water
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
10. 10.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) sunlight (c) a clear plastic bag (d) vinegar
11. 11.🌱 Which of these is needed for a seed to sprout? (a) soil (b) water (c) salt (d) sugar
12. 12.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
13. 13.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a timer (c) yeast (d) cold water to rinse
14. 14.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
15. 15.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) helium (c) hydrogen (d) carbon dioxide
16. 16.🫗 Which of these is done by handpicking? (a) salt from sea water (b) tea leaves from tea (c) husk from rice grain (d) small stones from dal
17. 17.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
18. 18.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) salt water (d) curd
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
22. 22.True or false: seeds on wet cotton sprouts in a few days. (a) True (b) False
23. 23.True or false: dipping the cotton bud is a job a child can do. (a) False (b) True
24. 24.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is magnetic (d) soap is an acid
26. 26.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
27. 27.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a balloon (c) a small bowl (d) an adult with an iron
28. 28.⚖️ 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
29. 29.True or false: sugar is something yeast needs. (a) False (b) True
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is the one thing we change. (a) False (b) True
31. 31.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
32. 32.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) throw them at friends (c) never put seeds in mouth (d) eat a few to check
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) lemon juice (d) a balloon
34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) chalk powder (d) food colour
35. 35.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a mirror (c) an adult with an iron (d) a balloon
36. 36.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) roots (c) flower (d) stem
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a clean glass (d) a battery cell

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