• zurohki@aussie.zone
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    3 days ago

    It’s funny how that goes: elements that react violently often form strong bonds, so make stable and safe compounds.

    • oyo@lemm.ee
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      3 days ago

      Yet in soup, or your mouth, NaCl will freely dissolve into its constituent parts. Which is totally fine, because electrons or something.

          • porous_grey_matter@lemmy.ml
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            3 days ago

            Atoms are most stable when they have a certain number of electrons around them, described as “having a full shell”. A neutral chlorine atom is one electron short of having a full shell, and a neutral sodium atom has one electron more than a full shell. Therefore, neutral chlorine will rip an electron off just about anything, causing damage, while neutral sodium will push its extra electron away, same deal. That is why they are such reactive chemicals. Once they’ve done that process they are stable.

            Then, as the other poster described, they are oppositely charged, so they are attracted to each other with medium strength, but not strongly bonded, which, to simplify it somewhat, is when atoms share electrons which both of them would like to have.

          • ByteJunk@lemmy.world
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            3 days ago

            Ok so my understanding is that NaCl, and other salts, are bound together by ionic bonds.

            In these bonds, one element typically gives up an electron completely to the other, as opposed to covalent bonds for example, where the electron (or electrons) are actually “shared” between the atoms.

            So here, sodium is happy to give up its electron and live its life as Na+, while chlorine will gladly take it and become Cl-.

            Since they now are oppositely charged, they kinda stick to each other because of electrostatic attraction, but not like the atoms in a molecule would.

            • stebo@sopuli.xyz
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              3 days ago

              ah right so in the soup it dissolves into Na+ and Cl- which are nonreactive as opposed to Na and Cl

    • ByteJunk@lemmy.world
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      3 days ago

      While I do like the principle, in this specific instance I don’t think it’s correct.

      When sodium reacts with water it doesn’t produce salt (NaCl), but sodium hydroxide (NaOH).

      This is better known as lye, and it’s a strong base and highly caustic, so definitely not a safe compound.

      Edit: the other product of this reaction is hydrogen gas, which technically is stable, but also highly flammable…

    • Lovable Sidekick@lemmy.world
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      2 days ago

      Yes, in general forming bonds releases energy and breaking them takes energy. The simplified explanation I remember is that multiple particles are more energetic when they’re apart, because they’re moving around separately. When they join together in a single molecule, moving as one, they give up some of their kinetic energy as heat. Breaking the bonds requires energy to be put back in so the pieces can move around independently again.