Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 655 · 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 more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) sugar water (d) salt water
3. 3.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) warm water (d) a paper clip
4. 4.🧺 Which of these is not needed for the yeast balloon? (a) a paper clip (b) warm water (c) sugar (d) dry yeast
5. 5.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a small bottle (c) dry yeast (d) a magnet
6. 6.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a magnet (c) baking soda (d) vinegar
7. 7.True or false: a timer is not needed for making butter. (a) False (b) True
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is what we measure. (a) True (b) False
10. 10.True or false: lemon juice is an acid. (a) False (b) True
11. 11.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) wash your hands (c) skip washing (d) lick your fingers
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a mirror (c) a balloon (d) a magnet
13. 13.True or false: baking a cake is a change that can be undone. (a) True (b) False
14. 14.⚖️ 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
15. 15.🍋 Secret message: who does this step — plugging in the iron? (a) an adult does it (b) a child can do it
16. 16.⚖️ 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 same kind of bag (b) amount of water drops (c) sun or shade (d) the size of the plant
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a mirror (c) sand and pebbles (d) a funnel
19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) True (b) False
20. 20.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) it turned into air (c) the paper ate it (d) dry juice is see-through
21. 21.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) the kind of plant (b) sun or shade (c) amount of water drops
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) sugar (c) dry yeast (d) a mirror
24. 24.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a comb (c) turmeric powder (d) dry yeast
25. 25.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a funnel or spoon (c) sugar (d) vinegar
26. 26.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
27. 27.True or false: a bowl is needed for making butter. (a) True (b) False
28. 28.True or false: vinegar is something yeast does not need. (a) False (b) True
29. 29.🧈 Before the butter appears, what does the cream turn into? (a) clear water (b) powder (c) thick whipped cream (d) ice
30. 30.True or false: baking soda is not needed for the fizzy balloon. (a) False (b) True
31. 31.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
32. 32.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
33. 33.🔮 Can the brown writing go back to being invisible? (a) no, it stays brown (b) yes, in the dark (c) yes, if cooled (d) yes, if shaken
34. 34.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
35. 35.True or false: water 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? Which of these is the one thing we change? (a) the amount of water (b) the kind of salt (c) the amount of salt (d) sunny or shady place
37. 37.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
38. 38.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
39. 39.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) lemon juice (c) turmeric powder (d) a cotton bud
40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind

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