Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 993 · 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.🔍 Which is the odd one out? (a) tamarind water (b) curd (c) lemon juice (d) salt water
2. 2.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a small bowl (c) turmeric powder (d) cotton wool
3. 3.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
6. 6.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
7. 7.🧺 Do we need a small bowl for the secret lemon message? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.🧺 Do we need an adult with an iron for the secret lemon message? (a) not needed (b) needed
10. 10.True or false: tamarind water is a base. (a) False (b) True
11. 11.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a few hours (c) sunlight (d) a clear plastic bag
12. 12.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
13. 13.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
14. 14.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
15. 15.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
16. 16.🫧 Which of these is a base? (a) curd (b) detergent water (c) salt water (d) vinegar
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the cream temperature (b) the amount of cream (c) how hard we shake (d) the same jar
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the light we look in
19. 19.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) curd (d) salt water
20. 20.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) seeds on wet cotton (c) wet seeds by a window (d) seeds on dry cotton
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) warm, not hot (d) ice cold
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the kind of salt (b) the same dish (c) days to see crystals (d) the amount of salt
24. 24.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
25. 25.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
26. 26.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
27. 27.🧺 Do we need water for sprouting seeds? (a) not needed (b) needed
28. 28.True or false: a magnet is not needed for the secret lemon message. (a) False (b) True
29. 29.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) flower (c) roots (d) stem
30. 30.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a balloon (c) a paper clip (d) warm water
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🧈 What is the watery liquid left after the butter forms? (a) oil (b) honey (c) buttermilk (d) vinegar
33. 33.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a mirror (d) a comb
34. 34.True or false: food colour does not dissolve in water. (a) True (b) False
35. 35.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
36. 36.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
38. 38.🪴 Which of these is a job of the stem? (a) carry water upward (b) make food in sunlight (c) hold the plant in soil (d) make seeds
39. 39.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
40. 40.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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