Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 659 · 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 a base? (a) orange juice (b) plain water (c) sugar water (d) detergent water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
3. 3.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
4. 4.True or false: a battery cell is needed for the leafy bag test. (a) False (b) True
5. 5.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) soap solution (d) a battery cell
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) False (b) True
8. 8.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is bigger (b) the balloon is smaller (c) it turns to bread (d) it shrinks to nothing
9. 9.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the leaves (c) the roots (d) the fruits
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
11. 11.🧺 Which of these is needed for making butter? (a) yeast (b) a magnet (c) a battery cell (d) a timer
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
13. 13.True or false: a timer is needed for making butter. (a) True (b) False
14. 14.True or false: cooking oil dissolves in water. (a) True (b) False
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🧺 Do we need yeast for the secret lemon message? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for sprouting seeds? (a) a few days (b) water (c) moong seeds (d) yeast
19. 19.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) a battery cell (d) muddy water
20. 20.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it changes colour (c) it can block breathing (d) it is too big
21. 21.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a magnet (c) a tray for spills (d) baking soda
25. 25.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Which of these is needed for the yeast balloon? (a) a balloon (b) turmeric powder (c) a paper clip (d) a comb
28. 28.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
29. 29.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
30. 30.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a magnet (d) warm water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) a cotton bud (c) white paper (d) lemon juice
34. 34.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a small bottle (c) a paper clip (d) warm water
35. 35.True or false: bad grains from rice is done by handpicking. (a) True (b) False
36. 36.🧺 Do we need yeast for sprouting seeds? (a) not needed (b) needed
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the light we look in (d) the turmeric paper
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
39. 39.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) gas is made inside (c) vinegar is hot (d) outside air gets in
40. 40.🔍 Which is the odd one out? (a) time (b) warm water (c) vinegar (d) sugar

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