Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 575 · 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.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it can burn skin (c) it is cold (d) it is magnetic
2. 2.🌱 Which of these does not sprout? (a) seeds in the freezer (b) wet seeds in the dark (c) seeds on wet cotton (d) wet seeds by a window
3. 3.🧺 Do we need an empty bottle for the fizzy balloon? (a) needed (b) not needed
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) sunny or shady place (b) the amount of salt (c) days to see crystals (d) the amount of water
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) white paper strips (d) a balloon
7. 7.True or false: a balloon is needed for the turmeric test. (a) True (b) False
8. 8.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a battery cell (c) a mirror (d) a rubber band
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) an adult with an iron (c) yeast (d) lemon juice
11. 11.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is kept the same. (a) True (b) False
12. 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
13. 13.True or false: folding paper is a change that cannot be undone. (a) False (b) True
14. 14.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) False (b) True
15. 15.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) small stones from dal (c) bran from wheat flour (d) salt from sea water
16. 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) False (b) True
17. 17.True or false: water is needed for sprouting seeds. (a) False (b) True
18. 18.True or false: melting butter is a change that cannot be undone. (a) False (b) True
19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is what we measure. (a) False (b) True
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
22. 22.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a mirror (c) a clear plastic bag (d) a few hours
23. 23.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
24. 24.True or false: seeds in the freezer sprouts in a few days. (a) True (b) False
25. 25.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) True (b) False
26. 26.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a mirror (c) a bowl (d) a timer
27. 27.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) plain water (d) salt water
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the ironing time (b) the same paper (c) the same cotton bud (d) the kind of juice
29. 29.True or false: sugar water is neutral. (a) True (b) False
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) sand and pebbles (d) a clean glass
31. 31.🧺 Do we need water for sprouting seeds? (a) not needed (b) needed
32. 32.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
33. 33.🌱 Why do the seeds on dry cotton not sprout? (a) they have no salt (b) they have no soil (c) they are too wet (d) they have no water
34. 34.True or false: dissolving salt is a change that can be undone. (a) False (b) True
35. 35.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a few days (c) a small bowl (d) a mirror
37. 37.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) warmth (c) sugar (d) salt
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the kind of juice (b) how dark the writing is (c) the ironing time (d) the same cotton bud
39. 39.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a balloon (c) a magnet (d) baking soda
40. 40.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) False (b) True

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