Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 258 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a bowl (c) a battery cell (d) cold water to rinse
2. 2.True or false: vinegar is not needed for the fizzy balloon. (a) False (b) True
3. 3.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a mirror (b) a jar with a tight lid (c) cold water to rinse (d) a timer
4. 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) size of the balloon (b) the amount of vinegar (c) spoons of baking soda
5. 5.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) putting the iron away (c) ironing the paper (d) letting the paper dry
6. 6.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a comb (c) sugar (d) a mirror
7. 7.True or false: a comb is needed for the fizzy balloon. (a) True (b) False
8. 8.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) detergent water (d) soap solution
9. 9.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is bigger (b) it turns to bread (c) the balloon is smaller (d) it shrinks to nothing
10. 10.🫧 Which of these is a base? (a) salt water (b) sugar water (c) detergent water (d) vinegar
11. 11.🪴 Which part of a plant does this job: hold up the leaves? (a) flower (b) stem (c) leaves (d) roots
12. 12.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) a funnel (d) sand and pebbles
16. 16.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
17. 17.True or false: sugar is something yeast needs. (a) False (b) True
18. 18.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
19. 19.🔍 Which is the odd one out? (a) sugar (b) water (c) soil (d) salt
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is the one thing we change. (a) True (b) False
21. 21.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
22. 22.True or false: vinegar is something yeast does not need. (a) False (b) True
23. 23.True or false: salt is something yeast needs. (a) False (b) True
24. 24.🧺 Which of these is needed for making butter? (a) a mirror (b) a magnet (c) a battery cell (d) fresh cream
25. 25.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a battery cell (c) vinegar (d) a potted plant
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same paper (b) the same cotton bud (c) the kind of juice (d) how dark the writing is
27. 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a few hours (c) vinegar (d) sunlight
28. 28.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
29. 29.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) no, never (c) they turn to stones (d) they melt
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a shallow dish (d) a spoon
33. 33.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) turmeric powder (d) salt
35. 35.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) lick your fingers (c) skip washing (d) rub your eyes
36. 36.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🪴 Which of these is a job of the flower? (a) take in water from soil (b) hold the plant in soil (c) make seeds (d) carry water upward
38. 38.⚖️ 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 change it (c) we measure it
39. 39.True or false: make food in sunlight is a job of the flower. (a) False (b) True
40. 40.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) whoever is fastest (c) the youngest child (d) only an adult

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