Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 640 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
2. 2.🌱 Will these sprout: seeds in the freezer? (a) sprouts (b) does not sprout
3. 3.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
4. 4.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
6. 6.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) False (b) True
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a clean glass (d) a magnet
10. 10.🌱 Seeds need water, air and ___ to sprout. (a) warmth (b) salt (c) soil (d) sugar
11. 11.🧺 Which of these is needed for making butter? (a) a mirror (b) a balloon (c) a battery cell (d) fresh cream
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same muddy water (c) how clear the water is (d) the same funnel
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
14. 14.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
15. 15.🪴 Which part of a plant does this job: carry water upward? (a) roots (b) leaves (c) flower (d) stem
16. 16.🫧 Which of these is neutral? (a) curd (b) orange juice (c) salt water (d) vinegar
17. 17.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of yeast (c) the amount of sugar (d) the same bottles
19. 19.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it can burn skin (c) it is cold (d) it is sticky
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) a mirror (c) a funnel or spoon (d) a balloon
21. 21.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) pour it down the sink (c) throw it at a wall (d) put it in your mouth
22. 22.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) soil (c) sugar (d) sunlight
23. 23.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a magnet (d) a spoon
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
26. 26.🍞 Which of these is something yeast needs? (a) sunlight (b) time (c) vinegar (d) a magnet
27. 27.True or false: cutting the lemon is a job for an adult. (a) True (b) False
28. 28.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
29. 29.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is what we measure. (a) True (b) False
30. 30.True or false: dipping the cotton bud is a job a child can do. (a) True (b) False
31. 31.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
32. 32.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
33. 33.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) cold water to rinse (c) a battery cell (d) a timer
34. 34.⚖️ 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) amount of water drops (b) sun or shade (c) the size of the plant
35. 35.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
36. 36.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) lemon juice (c) a small bowl (d) a balloon
37. 37.🧈 What is the watery liquid left after the butter forms? (a) honey (b) oil (c) vinegar (d) buttermilk
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the kind of balloon (b) spoons of baking soda (c) size of the balloon
39. 39.True or false: sunlight is something yeast needs. (a) False (b) True
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is the one thing we change. (a) True (b) False

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