Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 388 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) yeast (b) a bowl (c) a timer (d) cold water to rinse
2. 2.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
3. 3.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
4. 4.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a potted plant (c) a few hours (d) turmeric powder
5. 5.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a mirror (c) warm water (d) a balloon
6. 6.🧺 Which of these is not needed for the yeast balloon? (a) a comb (b) sugar (c) dry yeast (d) a balloon
7. 7.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it bursts at once (c) it turns yellow (d) it grows much faster
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) water (d) soap solution
9. 9.🌱 Which of these is not needed for a seed to sprout? (a) water (b) warmth (c) sunlight (d) air
10. 10.🧺 Do we need a mirror for the leafy bag test? (a) not needed (b) needed
11. 11.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) lemon juice (d) a balloon
13. 13.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) warm water (c) turmeric powder (d) a battery cell
14. 14.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) size of the balloon (b) the amount of sugar (c) the water temperature (d) the amount of water
16. 16.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a battery cell (c) vinegar (d) a tray for spills
17. 17.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
18. 18.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is cold (c) it can burn skin (d) it is magnetic
19. 19.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a magnet (c) turmeric powder (d) a balloon
20. 20.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
21. 21.True or false: a battery cell is not needed for making butter. (a) True (b) False
22. 22.True or false: a tray for spills is not needed for the fizzy balloon. (a) True (b) False
23. 23.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, if it is clear (d) yes, always
24. 24.True or false: a rubber band is needed for the leafy bag test. (a) True (b) False
25. 25.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a battery cell (c) a tray for spills (d) a seed
26. 26.🧺 Do we need yeast for making butter? (a) not needed (b) needed
27. 27.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
28. 28.True or false: baking a cake is a change that can be undone. (a) True (b) False
29. 29.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
30. 30.🪴 Which of these is a job of the roots? (a) hold the plant in soil (b) give out water vapour (c) make food in sunlight (d) hold up the leaves
31. 31.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
32. 32.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
33. 33.True or false: a battery cell is not needed for sprouting seeds. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) vinegar (b) time (c) salt (d) a magnet
35. 35.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
36. 36.🌱 Is soil needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
37. 37.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is the one thing we change. (a) False (b) True
38. 38.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) there is no change (c) it turns blue (d) it grows bigger
39. 39.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) browning lemon ink (d) melting ice
40. 40.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a balloon (b) a jar with a tight lid (c) fresh cream (d) a timer

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