Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 365 · 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 a change that cannot be undone? (a) cooking an egg (b) folding paper (c) melting butter (d) dissolving salt
2. 2.⚖️ 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 the one thing we change. (a) True (b) False
3. 3.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) both the same (c) neither of them (d) the hot sunny day
4. 4.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they do not sprout (b) they grow fruit (c) they sprout faster (d) they glow
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) size of the balloon (c) spoons of baking soda (d) the amount of vinegar
6. 6.⚖️ 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) sun or shade (c) amount of water drops
7. 7.True or false: sugar water keeps turmeric yellow. (a) False (b) True
8. 8.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
9. 9.🍋 Secret message: who does this step — reading the message? (a) an adult does it (b) a child can do it
10. 10.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
11. 11.🪴 Which part of a plant does this job: hold up the leaves? (a) stem (b) roots (c) flower (d) leaves
12. 12.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) frozen (d) saturated
13. 13.⚖️ 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
14. 14.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) outside air gets in (c) vinegar is hot (d) gas is made inside
15. 15.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) whoever is fastest (c) only an adult (d) the youngest child
16. 16.🌱 Which of these is not needed for a seed to sprout? (a) water (b) salt (c) warmth (d) air
17. 17.True or false: a mirror is needed for the secret lemon message. (a) True (b) False
18. 18.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a mirror (d) sand and pebbles
19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) dipping the cotton bud (b) ironing the paper (c) reading the message (d) letting the paper dry
21. 21.True or false: plain water is an acid. (a) True (b) False
22. 22.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the same bottle (c) spoons of baking soda (d) the amount of vinegar
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) True (b) False
27. 27.⚖️ 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
28. 28.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the mud (d) the water
29. 29.🌱 Which of these does not sprout? (a) wet seeds by a window (b) wet seeds in the dark (c) seeds on wet cotton (d) boiled seeds
30. 30.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) letting the paper dry (c) writing the message (d) reading the message
31. 31.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
32. 32.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) salt (b) sunlight (c) soil (d) air
34. 34.True or false: yeast is needed for the leafy bag test. (a) True (b) False
35. 35.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) skip washing
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) the same paper (c) how dark the writing is
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a spoon (d) warm water
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) water (d) soap solution
39. 39.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) dipping the cotton bud (c) ironing the paper (d) putting the iron away

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