Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 621 · 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.🌱 Is sugar needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) a magnet (d) muddy water
3. 3.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) turmeric powder (c) dry yeast (d) sugar
4. 4.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) sugar (c) water (d) air
5. 5.🍋 Which of these steps is a job for an adult? (a) putting the iron away (b) dipping the cotton bud (c) reading the message (d) writing the message
6. 6.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a balloon (c) lemon juice (d) turmeric powder
7. 7.🛟 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
8. 8.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a mirror (d) a balloon
9. 9.⚖️ 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 ironing time (c) the same cotton bud (d) the kind of juice
10. 10.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) eat a few to check (c) never put seeds in mouth (d) throw them at friends
11. 11.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
12. 12.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it flowers more (c) it grows faster (d) it turns blue
13. 13.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
14. 14.🧺 Do we need an empty bottle for the fizzy balloon? (a) needed (b) not needed
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
16. 16.🔍 Which is the odd one out? (a) orange juice (b) lemon juice (c) curd (d) soap solution
17. 17.🛟 The water for the yeast should be ___. (a) boiling hot (b) very salty (c) warm, not hot (d) ice cold
18. 18.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) reading the message (c) dipping the cotton bud (d) cutting the lemon
19. 19.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) rusting iron (d) melting ice
20. 20.True or false: an empty bottle is not needed for the fizzy balloon. (a) False (b) True
21. 21.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) wash your hands (c) lick your fingers (d) rub your eyes
22. 22.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) fresh cream (c) a mirror (d) a timer
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
24. 24.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
25. 25.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
26. 26.🪴 Which of these is a job of the roots? (a) give out water vapour (b) make food in sunlight (c) take in water from soil (d) carry water upward
27. 27.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) cooking an egg (d) melting ice
28. 28.🧺 Which of these is needed for making butter? (a) a mirror (b) a battery cell (c) a jar with a tight lid (d) yeast
29. 29.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) blue words (c) almost nothing (d) a rainbow
30. 30.🧺 Which of these is not needed for the leafy bag test? (a) yeast (b) sunlight (c) a clear plastic bag (d) a few hours
31. 31.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) water (c) a battery cell (d) a few days
32. 32.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) it grows bigger (d) there is no change
33. 33.🛟 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
34. 34.True or false: a comb is not needed for the yeast balloon. (a) False (b) True
35. 35.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
36. 36.True or false: warm water is needed for growing salt crystals. (a) False (b) True
37. 37.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a mirror (c) a magnet (d) an empty bottle
38. 38.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a timer (c) a jar with a tight lid (d) a battery cell
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) yeast (d) water
40. 40.🫧 Is vinegar 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