Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 737 · 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.True or false: vinegar is something yeast does not need. (a) True (b) False
2. 2.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.True or false: a comb is not needed for the fizzy balloon. (a) True (b) False
4. 4.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
5. 5.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much less water (c) exactly the same (d) much more water
6. 6.True or false: tea leaves from tea is done by filtering. (a) True (b) False
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we keep it the same (b) we change it (c) we measure it
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 same kind of bag”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is bigger (c) it turns to bread (d) the balloon is smaller
10. 10.True or false: give out water vapour is a job of the flower. (a) True (b) False
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a balloon (d) cotton or cloth
12. 12.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on wet cotton (c) wet seeds in the dark (d) seeds on dry cotton
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) turmeric powder (d) cotton or cloth
14. 14.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) plain water (d) salt water
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) water (d) a mirror
16. 16.True or false: melting butter is a change that can be undone. (a) False (b) True
17. 17.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a battery cell (d) a piece of string
19. 19.🔍 Which is the odd one out? (a) curd (b) orange juice (c) vinegar (d) baking soda water
20. 20.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) fresh cream (c) cold water to rinse (d) yeast
21. 21.🔍 Which is the odd one out? (a) water (b) sunlight (c) air (d) warmth
22. 22.⚖️ 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
23. 23.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) sand and pebbles (d) a balloon
25. 25.🧺 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) yeast
26. 26.True or false: melting butter is a change that cannot be undone. (a) True (b) False
27. 27.True or false: vinegar is an acid. (a) True (b) False
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the kind of balloon (c) the amount of vinegar (d) the same bottle
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a jar with a tight lid (c) a bowl (d) a battery cell
30. 30.True or false: a magnet is not needed for the yeast balloon. (a) False (b) True
31. 31.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) lemon juice (d) sugar water
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) warm water (c) a paper clip (d) a mirror
34. 34.🔮 The fizzing stops after a while. Why? (a) an ingredient ran out (b) the bottle got tired (c) the gas froze (d) the balloon got cold
35. 35.⚖️ 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 change it (c) we measure it
36. 36.⚖️ 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
37. 37.True or false: carry water upward is a job of the stem. (a) False (b) True
38. 38.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
39. 39.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) salt crystals (c) tiny water drops (d) tiny insects
40. 40.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True

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