Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 519 · 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 — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the number of drops
2. 2.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) orange juice (d) plain water
3. 3.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a mirror (d) turmeric powder
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) water (d) lemon juice
6. 6.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a magnet (b) a cotton bud (c) an adult with an iron (d) white paper
7. 7.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) False (b) True
10. 10.🧺 Which of these is needed for making butter? (a) a mirror (b) a balloon (c) turmeric powder (d) fresh cream
11. 11.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) an empty bottle (c) a balloon (d) a comb
12. 12.True or false: vinegar is neutral. (a) False (b) True
13. 13.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same bowls (b) the kind of seeds (c) wet or dry cotton (d) the number of seeds
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is what we measure. (a) False (b) True
15. 15.True or false: a tray for spills is not needed for the fizzy balloon. (a) False (b) True
16. 16.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) False (b) True
17. 17.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
18. 18.True or false: vinegar is something yeast does not need. (a) True (b) False
19. 19.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) orange juice (d) lemon juice
20. 20.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
21. 21.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) a balloon (d) yeast
22. 22.🍋 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
23. 23.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the leaves (c) the flowers (d) the roots
24. 24.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it turns to sugar (b) it glows (c) it grows faster (d) the yeast is killed
25. 25.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
26. 26.⚖️ 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 kept the same. (a) True (b) False
27. 27.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it turns yellow (c) it grows much faster (d) it grows very little
28. 28.True or false: a clear plastic bag is needed for the leafy bag test. (a) False (b) True
29. 29.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
30. 30.True or false: detergent water is neutral. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) baking soda water (d) soap solution
32. 32.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) dark brown words (c) blue words (d) almost nothing
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of sugar (b) size of the balloon (c) the amount of water (d) the water temperature
34. 34.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) much less water (d) exactly the same
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) an empty bottle (c) a comb (d) a funnel or spoon
37. 37.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) steam (c) carbon dioxide gas (d) smoke
38. 38.True or false: vinegar is a base. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a small bowl (c) a mirror (d) an adult with an iron

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