Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 276 · 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 the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) a rubber band (c) a clear plastic bag (d) sunlight
2. 2.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) sand
3. 3.True or false: a small bottle is needed for the yeast balloon. (a) False (b) True
4. 4.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
5. 5.True or false: lemon juice is not needed for the secret lemon message. (a) False (b) True
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) the amount of vinegar (c) spoons of baking soda (d) size of the balloon
7. 7.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) hydrogen (c) helium (d) oxygen
8. 8.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
9. 9.True or false: a battery cell is not needed for the leafy bag test. (a) False (b) True
10. 10.True or false: soap solution is a base. (a) True (b) False
11. 11.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) it turns to honey (c) the balloon bursts (d) a huge eruption
12. 12.True or false: baking soda water is neutral. (a) True (b) False
13. 13.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
14. 14.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it changes colour (c) it is too big (d) it gets wet
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
17. 17.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) rinse with clean water (c) add baking soda (d) ignore it
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
19. 19.True or false: a paper clip is not needed for the yeast balloon. (a) False (b) True
20. 20.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
21. 21.🧺 Do we need a mirror for making butter? (a) not needed (b) needed
22. 22.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the same place
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same funnel (c) the amount poured (d) the same glass
24. 24.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
25. 25.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) as tight as possible (c) gently, not too tight (d) with a hot glue gun
26. 26.True or false: fresh cream is needed for making butter. (a) False (b) True
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) True (b) False
28. 28.True or false: make seeds is a job of the flower. (a) False (b) True
29. 29.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) warm water (d) salt
31. 31.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
32. 32.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a battery cell (c) a potted plant (d) a clear plastic bag
34. 34.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) lemon juice (d) vinegar
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) False (b) True
37. 37.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a magnet (c) a balloon (d) dry yeast
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) False (b) True
40. 40.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution

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