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0

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11

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How does the number of oxidation sites in tea tannin affect tooth staining?

organic-chemistry everyday-chemistry

asked 4 hours ago Help 1

1

vote

1

answer

40

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Some substances appear white when crushed while others do not. Why?

everyday-chemistry crystal-structure color minerals alkali-metals

answered Jan 14 at 21:56 DrMoishe Pippik 17.5k

19

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2

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468

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Can molecules diffuse upstream when emptying a cup of tea?

physical-chemistry everyday-chemistry

modified Jan 14 at 1:56 Community♦ 1

1

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0

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29

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What gas is evolved when using vinegar, hydrogen peroxide, and salt to etch copper, and why?

inorganic-chemistry everyday-chemistry home-experiment

asked Jan 13 at 20:29 Marc Sulfridge 11

3

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1

answer

35

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Understanding sodium hydroxide drain cleaner's exothermic dissolution of aluminum; does the aluminum need to be oxidized before it dissolves?

inorganic-chemistry acid-base everyday-chemistry redox

modified Jan 13 at 3:39 uhoh 5,472

4

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1

answer

2k

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What is the exothermic reaction of superglue with cardboard?

everyday-chemistry polymers heat

modified Jan 12 at 6:21 andselisk♦ 27.8k

1

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1

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2k

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Isopropyl alcohol to clean germs on countertops

everyday-chemistry cleaning

modified Jan 11 at 8:38 andselisk♦ 27.8k

12

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3

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4k

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What does teflon give on decomposition?

organic-chemistry everyday-chemistry

modified Jan 11 at 8:21 Tibike Pásztor 1

15

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3

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18k

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Is poison still poisonous after its 'expiration date'?

everyday-chemistry toxicity

modified Jan 11 at 7:21 Sita ram sanyasi 1

1

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0

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What exactly is going on in this reaction: sodium bicarbonate (supersaturated aqueous), isopropyl alcohol, and acetic acid (vinegar)?

acid-base everyday-chemistry aqueous-solution solubility

modified Jan 11 at 1:27 Milan 1

15

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4

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Are modern newspaper inks a health risk?

everyday-chemistry safety toxicity identification

answered Jan 5 at 0:22 releseabe 169

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0

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39

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Oxide caused by running a saucepan with aluminium handle through the dishwasher

everyday-chemistry

asked Jan 4 at 7:14 jogloran 119

2

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2

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8k

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Can 99% isopropyl alcohol be stored in a clear container?

everyday-chemistry alcohols containers

modified Jan 4 at 2:31 Davej 1

0

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33

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How long does it take Freon refrigerant to disappear from a room after an accidental major leakage?

organic-chemistry reaction-mechanism everyday-chemistry reaction-control organic-reduction

asked Jan 3 at 10:16 John 1

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