Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 844 · 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.🫗 How do we separate tea leaves from tea? (a) sieving (b) filtering (c) evaporating (d) winnowing
2. 2.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
3. 3.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.True or false: a small bowl is needed for sprouting seeds. (a) True (b) False
5. 5.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) dipping the cotton bud (b) writing the message (c) plugging in the iron (d) reading the message
7. 7.True or false: sunlight is not needed for a seed to sprout. (a) True (b) False
8. 8.True or false: a bowl is not needed for making butter. (a) False (b) True
9. 9.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) an adult with an iron (c) white paper (d) lemon juice
10. 10.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) vinegar (c) yeast (d) a clear plastic bag
11. 11.True or false: vinegar is an acid. (a) False (b) True
12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a magnet (b) warm water (c) dry yeast (d) a small bottle
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) germs are invisible (d) clear water is sweet
14. 14.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a battery cell (d) a bowl
15. 15.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
16. 16.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) no butter forms (c) it turns to cheese (d) it turns blue
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) yeast (d) white paper strips
18. 18.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) turmeric powder (c) an adult with an iron (d) white paper
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
21. 21.True or false: baking soda is not needed for the fizzy balloon. (a) True (b) False
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
23. 23.True or false: baking soda water is neutral. (a) True (b) False
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a magnet (d) muddy water
25. 25.True or false: lemon juice is an acid. (a) False (b) True
26. 26.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) True (b) False
27. 27.True or false: plain water is an acid. (a) True (b) False
28. 28.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby
29. 29.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
30. 30.🌱 Why do the seeds on dry cotton not sprout? (a) they have no salt (b) they are too wet (c) they have no water (d) they have no soil
31. 31.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
32. 32.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) white paper strips (c) yeast (d) a balloon
33. 33.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it gets wet (d) it changes colour
34. 34.True or false: baking soda is needed for the fizzy balloon. (a) False (b) True
35. 35.True or false: reading the message is a job a child can do. (a) True (b) False
36. 36.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) white at once (d) bright blue
37. 37.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) sugar (c) warm water (d) a mirror
39. 39.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
40. 40.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water

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