Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 374 · 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.True or false: time is something yeast does not need. (a) True (b) False
2. 2.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
4. 4.True or false: dissolving salt is a change that can be undone. (a) True (b) False
5. 5.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) nothing at all (d) tiny water drops
6. 6.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it shrinks to nothing (c) it turns to bread (d) the balloon is bigger
7. 7.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) warm water (c) dry yeast (d) a comb
8. 8.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
9. 9.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
12. 12.⚖️ 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
13. 13.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: detergent water is neutral. (a) True (b) False
16. 16.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
17. 17.True or false: a paper clip is not needed for the yeast balloon. (a) False (b) True
18. 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a potted plant (c) sunlight (d) vinegar
19. 19.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
20. 20.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a battery cell (c) warm water (d) a small bottle
21. 21.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.True or false: a battery cell is needed for sprouting seeds. (a) False (b) True
23. 23.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) sugar water (d) orange juice
24. 24.🧺 Do we need vinegar for the fizzy balloon? (a) needed (b) not needed
25. 25.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) melting ice (d) milk turning to curd
26. 26.🫧 Which of these is an acid? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) size of the balloon (c) spoons of baking soda
28. 28.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
29. 29.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
30. 30.True or false: a few days is not needed for sprouting seeds. (a) True (b) False
31. 31.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for making butter? (a) a bowl (b) a balloon (c) cold water to rinse (d) fresh cream
33. 33.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) the time we wait (b) sun or shade (c) amount of water drops
35. 35.🧺 Which of these is needed for making butter? (a) a magnet (b) a jar with a tight lid (c) a balloon (d) turmeric powder
36. 36.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it makes salt (c) it turns pink (d) it takes much longer
37. 37.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
38. 38.🛟 Why must children keep their fingers away from the iron? (a) it is cold (b) it is sticky (c) it can burn skin (d) it is magnetic
39. 39.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base

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