Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 74 · 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.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a balloon (d) sand and pebbles
2. 2.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
3. 3.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) tiny water drops (d) nothing at all
4. 4.True or false: sunlight is something yeast does not need. (a) False (b) True
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the kind of balloon (c) the amount of vinegar (d) spoons of baking soda
6. 6.⚖️ 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 the one thing we change. (a) False (b) True
7. 7.True or false: turmeric powder is needed for sprouting seeds. (a) False (b) True
8. 8.True or false: a bowl is needed for making butter. (a) False (b) True
9. 9.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
10. 10.True or false: a battery cell is needed for sprouting seeds. (a) False (b) True
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
12. 12.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) hold the plant in soil (c) carry water upward (d) make food in sunlight
13. 13.🔍 Which is the odd one out? (a) water (b) sunlight (c) air (d) warmth
14. 14.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) warmth (c) sunlight (d) soil
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the same bottles (c) the water temperature
16. 16.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a comb (c) an empty bottle (d) a tray for spills
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
19. 19.True or false: water is not needed for a seed to sprout. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) lemon juice (d) white paper strips
21. 21.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
22. 22.True or false: letting the paper dry is a job for an adult. (a) False (b) True
23. 23.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) a balloon (d) yeast
24. 24.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) warm water (c) a small bottle (d) a balloon
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
26. 26.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) sand and pebbles (d) cotton or cloth
28. 28.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) freezing water (d) cooking an egg
29. 29.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) writing the message (b) ironing the paper (c) plugging in the iron (d) cutting the lemon
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) True (b) False
32. 32.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) white paper (c) an adult with an iron (d) a mirror
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
35. 35.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
36. 36.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) yeast (d) a comb
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) leaves (c) roots (d) stem
39. 39.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid

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