Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 906 · 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 not needed for the secret lemon message? (a) white paper (b) lemon juice (c) yeast (d) a cotton bud
2. 2.True or false: a timer is needed for making butter. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) sugar (b) salt (c) soil (d) water
4. 4.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) cold water to rinse (c) a jar with a tight lid (d) yeast
5. 5.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a mirror (c) warm water (d) a balloon
6. 6.True or false: warm water is something yeast does not need. (a) False (b) True
7. 7.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) both the same (c) the cool cloudy day (d) the hot sunny day
8. 8.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
9. 9.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) any child (c) the youngest child (d) only an adult
10. 10.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) a seed (c) baking soda (d) a mirror
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of water (b) the kind of salt (c) sunny or shady place (d) the same dish
12. 12.True or false: tea leaves from tea is done by evaporating. (a) False (b) True
13. 13.🧺 Do we need a timer for making butter? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) sugar (b) warmth (c) soil (d) sunlight
15. 15.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) turmeric powder (c) a battery cell (d) a clear plastic bag
16. 16.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
17. 17.🪴 Which of these is a job of the stem? (a) give out water vapour (b) hold the plant in soil (c) make food in sunlight (d) hold up the leaves
18. 18.🫧 Which of these is neutral? (a) soap solution (b) lemon juice (c) sugar water (d) curd
19. 19.True or false: detergent water keeps turmeric yellow. (a) False (b) True
20. 20.True or false: soap solution is needed for the turmeric test. (a) True (b) False
21. 21.True or false: ironing the paper is a job for an adult. (a) True (b) False
22. 22.True or false: sugar is needed for the yeast balloon. (a) False (b) True
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
24. 24.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) turmeric powder (c) a magnet (d) sugar
25. 25.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a comb (c) a mirror (d) dry yeast
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a clear plastic bag (c) a potted plant (d) yeast
28. 28.🫧 Which of these is a base? (a) tamarind water (b) salt water (c) detergent water (d) vinegar
29. 29.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
30. 30.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a funnel (d) a balloon
35. 35.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a mirror (c) cotton wool (d) a small bowl
36. 36.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) browning lemon ink (d) dissolving salt
37. 37.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so cream does not spill (c) so it turns yellow (d) so air gets out
38. 38.True or false: orange juice is an acid. (a) False (b) True
39. 39.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a potted plant (c) a clear plastic bag (d) a few hours
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a shallow dish (d) yeast

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