Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 483 · 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 yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
2. 2.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) leaves (c) roots (d) stem
3. 3.🔍 Which is the odd one out? (a) rusting iron (b) dissolving salt (c) browning lemon ink (d) cooking an egg
4. 4.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) wet seeds by a window (c) seeds in the freezer (d) seeds on wet cotton
6. 6.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) sunlight (c) a clear plastic bag (d) a magnet
7. 7.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to colour it (c) it is food for yeast (d) to make it sweet
8. 8.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
9. 9.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) moong seeds (c) a balloon (d) a few days
10. 10.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
11. 11.🔍 Which is the odd one out? (a) sand (b) food colour (c) glucose powder (d) sugar
12. 12.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) with sharp wire (d) gently, not too tight
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the iron setting (b) the kind of juice (c) how dark the writing is
14. 14.🫧 Which of these is an acid? (a) curd (b) plain water (c) soap solution (d) sugar water
15. 15.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) water (c) a few days (d) a small bowl
16. 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) a small bowl (c) moong seeds (d) cotton wool
19. 19.True or false: sugar is something yeast does not need. (a) True (b) False
20. 20.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a magnet (c) an adult with an iron (d) a battery cell
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a potted plant (d) a magnet
23. 23.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the same cotton bud
25. 25.True or false: warm water is not needed for the yeast balloon. (a) True (b) False
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same muddy water (c) the same glass (d) how clear the water is
27. 27.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
28. 28.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
30. 30.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
31. 31.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a magnet (c) a rubber band (d) yeast
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
33. 33.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) cotton wool (c) turmeric powder (d) moong seeds
34. 34.🍋 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
35. 35.True or false: vinegar is something yeast does not need. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) size of the balloon (c) the same bottles (d) the amount of yeast
38. 38.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much less water (c) exactly the same (d) much more water
39. 39.🍞 Which of these is something yeast does not need? (a) sugar (b) warm water (c) salt (d) time
40. 40.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) never put seeds in mouth (c) eat a few to check (d) throw them at friends

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