Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 120 · 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.⚖️ 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
2. 2.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) dipping the cotton bud (c) cutting the lemon (d) plugging in the iron
3. 3.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
4. 4.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
5. 5.🍋 Which of these steps is a job for an adult? (a) writing the message (b) putting the iron away (c) reading the message (d) letting the paper dry
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a battery cell (d) muddy water
7. 7.⚖️ 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 measure it (c) we change it
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.📘 Is the fizzing a sign that a new substance is made? (a) no, nothing changes (b) yes, a new gas forms (c) it is only dissolving (d) it is only melting
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
12. 12.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
13. 13.True or false: dry yeast is not needed for the yeast balloon. (a) True (b) False
14. 14.🛟 The water for the yeast should be ___. (a) ice cold (b) warm, not hot (c) very salty (d) boiling hot
15. 15.🧺 Which of these is not needed for the fizzy balloon? (a) vinegar (b) an empty bottle (c) a mirror (d) baking soda
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the kind of salt (c) sunny or shady place
18. 18.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
19. 19.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) sugar (c) a small bottle (d) warm water
20. 20.True or false: take in water from soil is a job of the roots. (a) False (b) True
21. 21.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the time we wait (b) the same kind of bag (c) sun or shade (d) the kind of plant
23. 23.🧺 Which of these is not needed for the yeast balloon? (a) a battery cell (b) a small bottle (c) sugar (d) a balloon
24. 24.True or false: plugging in the iron is a job a child can do. (a) True (b) False
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
26. 26.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) False (b) True
29. 29.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) yeast (c) white paper (d) lemon juice
30. 30.True or false: gravel from fine sand is done by filtering. (a) False (b) True
31. 31.True or false: a few hours is needed for the leafy bag test. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) True (b) False
35. 35.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) baking soda (c) vinegar (d) a tray for spills
37. 37.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) yeast (d) a mirror
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is what we measure. (a) True (b) False
40. 40.🧺 Do we need a bowl for making butter? (a) needed (b) not needed

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