Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 117 · 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.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is the one thing we change. (a) True (b) False
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) it turns to ice (c) lots of fizzy bubbles (d) nothing at all
6. 6.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the same jar (c) the amount of cream (d) the cream temperature
7. 7.🔍 Which is the odd one out? (a) milk turning to curd (b) melting butter (c) dissolving salt (d) freezing water
8. 8.🔍 Which is the odd one out? (a) orange juice (b) lemon juice (c) detergent water (d) tamarind water
9. 9.⚖️ 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 iron setting (c) how dark the writing is
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.True or false: sunlight is needed for a seed to sprout. (a) False (b) True
13. 13.True or false: water is not needed for sprouting seeds. (a) True (b) False
14. 14.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) sunlight (c) vinegar (d) a clear plastic bag
16. 16.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
17. 17.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
18. 18.True or false: lemon juice is an acid. (a) True (b) False
19. 19.True or false: water is not needed for the turmeric test. (a) False (b) True
20. 20.🛟 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
21. 21.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
22. 22.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the water temperature (c) the same bottles (d) size of the balloon
26. 26.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
27. 27.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
29. 29.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) warm water (d) a comb
30. 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the same kind of bag (c) the size of the plant (d) sun or shade
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
32. 32.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
33. 33.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🍋 Secret message: who does this step — dipping the cotton bud? (a) an adult does it (b) a child can do it
35. 35.True or false: air is not needed for a seed to sprout. (a) True (b) False
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) boiled seeds (c) seeds on wet cotton (d) seeds on dry cotton
38. 38.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) a cotton bud (c) lemon juice (d) an adult with an iron
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout

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