Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 669 · 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 a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much less water (b) exactly the same (c) it fills with soil (d) much more water
3. 3.🔍 Which is the odd one out? (a) a magnet (b) salt (c) vinegar (d) time
4. 4.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
5. 5.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) seeds in the freezer (d) wet seeds in the dark
6. 6.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) bright red (b) pale yellow (c) dark green (d) blue
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is the one thing we change. (a) False (b) True
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same funnel (c) the same glass (d) the filter material
9. 9.True or false: fresh cream is needed for making butter. (a) True (b) False
10. 10.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a balloon (c) dry yeast (d) a mirror
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
13. 13.🔍 Which is the odd one out? (a) sunlight (b) warmth (c) air (d) water
14. 14.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
15. 15.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) warm water (c) turmeric powder (d) sugar
16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
19. 19.🧺 Which of these is needed for making butter? (a) yeast (b) cold water to rinse (c) a mirror (d) a balloon
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.True or false: warmth is needed for a seed to sprout. (a) True (b) False
22. 22.🧺 Which of these is not needed for the fizzy balloon? (a) sugar (b) a balloon (c) a funnel or spoon (d) baking soda
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
24. 24.True or false: a few days is not needed for sprouting seeds. (a) True (b) False
25. 25.🧺 Do we need a tray for spills for the fizzy balloon? (a) not needed (b) needed
26. 26.🧺 Which of these is not needed for sprouting seeds? (a) a small bowl (b) water (c) cotton wool (d) a balloon
27. 27.📘 What do we call a seed starting to grow? (a) pollination (b) evaporation (c) germination (d) condensation
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.True or false: an empty bottle is needed for the fizzy balloon. (a) False (b) True
30. 30.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) turmeric powder (d) warm water
32. 32.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
33. 33.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) winnowing (d) filtering
34. 34.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) how many seeds sprout (b) the same bowls (c) the kind of seeds (d) the same place
35. 35.⚖️ 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
36. 36.True or false: putting the iron away is a job for an adult. (a) False (b) True
37. 37.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
38. 38.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a fruit (c) a flower (d) a thorn
39. 39.🧺 Which of these is needed for the turmeric test? (a) water (b) a balloon (c) a magnet (d) a comb
40. 40.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed

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