Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 199 · 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 same funnel”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) it turned into air (c) dry juice is see-through (d) the paper ate it
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a balloon (d) turmeric powder
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) soap solution (d) sugar water
6. 6.True or false: hold the plant in soil is a job of the stem. (a) True (b) False
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same funnel (c) the amount poured (d) how clear the water is
8. 8.⚖️ 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 same paper (c) the ironing time (d) the iron setting
9. 9.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a paper clip (d) warm water
10. 10.🫧 Which of these is a base? (a) curd (b) soap solution (c) vinegar (d) sugar water
11. 11.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same funnel
13. 13.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a battery cell (b) a potted plant (c) sunlight (d) a clear plastic bag
14. 14.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a small bottle (c) a magnet (d) a comb
15. 15.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) almost nothing (c) dark brown words (d) blue words
16. 16.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) a balloon (c) turmeric powder (d) cotton wool
18. 18.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) plugging in the iron (c) putting the iron away (d) writing the message
19. 19.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) the air (c) the cotton wool (d) food stored in the seed
20. 20.⚖️ 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) False (b) True
21. 21.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a cotton bud (c) a balloon (d) white paper
22. 22.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) very little fizzing (c) a huge eruption (d) the balloon bursts
23. 23.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) plain water (d) sugar water
27. 27.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
28. 28.🪴 Which part of a plant does this job: make food in sunlight? (a) leaves (b) stem (c) roots (d) flower
29. 29.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
30. 30.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) sand (d) sawdust
31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) water (d) a balloon
32. 32.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
33. 33.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
34. 34.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it turns yellow (c) it grows very little (d) it bursts at once
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a balloon (d) a dropper or spoon
39. 39.⚖️ 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) the same paper (c) how dark the writing is (d) the ironing time
40. 40.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True

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