Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 696 · 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 of these is done by winnowing? (a) bran from wheat flour (b) small stones from dal (c) salt from sea water (d) husk from rice grain
2. 2.📘 What do we call a seed starting to grow? (a) germination (b) pollination (c) condensation (d) evaporation
3. 3.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they turn to stones (c) they melt (d) no, never
4. 4.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) sunlight (c) a few hours (d) a potted plant
5. 5.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sand (d) table salt
6. 6.True or false: warmth is not needed for a seed to sprout. (a) True (b) False
7. 7.🧺 Do we need a timer for making butter? (a) needed (b) not needed
8. 8.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rinse with clean water (d) rub it hard
9. 9.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
10. 10.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
11. 11.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) a cotton bud (d) a battery cell
12. 12.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) soap solution (d) vinegar
13. 13.True or false: soap solution is neutral. (a) False (b) True
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a magnet (d) a piece of string
15. 15.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) keep it away from eyes (c) put it in your mouth (d) seal it in a glass jar
16. 16.True or false: a battery cell is not needed for making butter. (a) False (b) True
17. 17.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) True (b) False
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
19. 19.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
20. 20.🛟 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
21. 21.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) sugar crystals form (d) salt crystals form
22. 22.True or false: a magnet is needed for the leafy bag test. (a) True (b) False
23. 23.🍞 Which of these is something yeast does not need? (a) sugar (b) salt (c) time (d) warm water
24. 24.🔍 Which is the odd one out? (a) reading the message (b) cutting the lemon (c) plugging in the iron (d) ironing the paper
25. 25.🔍 Which is the odd one out? (a) salt water (b) curd (c) plain water (d) sugar water
26. 26.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
27. 27.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) writing turns green (c) the paper floats (d) writing stays faint
28. 28.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
29. 29.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
30. 30.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) feed them to pets (c) eat a few to check (d) never put seeds in mouth
31. 31.🫗 Which of these is done by sieving? (a) small stones from dal (b) salt from sea water (c) bad grains from rice (d) gravel from fine sand
32. 32.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the filter material (c) the same glass (d) the same funnel
34. 34.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) a magnet (d) turmeric powder
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
36. 36.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
37. 37.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
38. 38.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) the kind of plant (b) amount of water drops (c) sun or shade
39. 39.True or false: moong seeds is needed for sprouting seeds. (a) True (b) False
40. 40.True or false: wet seeds in the dark does not sprout. (a) True (b) False

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