Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 91 · 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.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
2. 2.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
4. 4.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
5. 5.True or false: fresh cream is not needed for making butter. (a) False (b) True
6. 6.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) the balloon bursts (c) a huge eruption (d) it turns to honey
7. 7.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is what we measure. (a) True (b) False
8. 8.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) orange juice (d) sugar water
9. 9.True or false: warm water is needed for growing salt crystals. (a) False (b) True
10. 10.🍞 Which of these is something yeast needs? (a) sugar (b) vinegar (c) sunlight (d) salt
11. 11.True or false: yeast is needed for making butter. (a) True (b) False
12. 12.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) salt (c) warmth (d) sugar
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🫗 How do we separate tea leaves from tea? (a) sieving (b) evaporating (c) filtering (d) winnowing
15. 15.True or false: a comb is needed for the yeast balloon. (a) False (b) True
16. 16.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a funnel or spoon (c) a balloon (d) sugar
18. 18.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bad grains from rice (c) salt from sea water (d) husk from rice grain
19. 19.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) nothing at all (c) tiny insects (d) tiny water drops
20. 20.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) vinegar (d) plain water
21. 21.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) False (b) True
23. 23.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) hydrogen (c) helium (d) carbon dioxide
24. 24.True or false: take in water from soil is a job of the flower. (a) False (b) True
25. 25.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it turns pink (c) it makes salt (d) it takes much longer
26. 26.⚖️ 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) False (b) True
27. 27.True or false: make food in sunlight is a job of the roots. (a) False (b) True
28. 28.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) freezing water (d) rusting iron
29. 29.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
30. 30.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) turmeric powder (c) a magnet (d) a comb
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
32. 32.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it gets wet (c) it is too big (d) it can block breathing
33. 33.⚖️ 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) the amount of yeast (b) size of the balloon (c) the same bottles (d) the water temperature
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
36. 36.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) detergent water (d) vinegar
37. 37.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) a cotton bud (c) an adult with an iron (d) lemon juice
38. 38.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
39. 39.🧺 Do we need yeast for making butter? (a) not needed (b) needed
40. 40.True or false: an adult with an iron is not needed for the secret lemon message. (a) True (b) False

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