Atomic Gallery Walk by Ethan McPherson https://padlet.com/mcphersone3/bjete49x6a4llzdf Made with facts and pictures en-us 2021-09-29 12:35:39 UTC 2021-09-29 13:57:01 UTC hello@padlet.com https://padlet.net/icons/png/269b.png Hot New Take On What We Are Made Of mcphersone3 https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778077027 Dalton theorized that the atom, like a pool ball it was solid and hard.  he we did not know anything about protons, neutrons, and electrons.
Based on this theory, Dalton developed 4 postulates:

  1. All matter is made of atoms. Atoms are indivisible and indestructible.

  2. All atoms of a given element are identical in mass and properties

  3. Compounds are formed by a combination of two or more different kinds of atoms.

  4. A chemical reaction is a rearrangement of atoms.


Some Facts About Dalton:
A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: Elements consist of indivisible small particles (atoms). All atoms of the same element are identical; different elements have different types of atom. Atoms can neither be created nor destroyed.
]]> 2021-09-29 13:41:14 UTC https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778077027 What Is In A Atom???? mcphersone3 https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778088989 J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."

Some Facts About J.J.:
In 1906 he demonstrated that hydrogen had only one electron per atom. He designed instruments to pas cathode rays through a magnetic field and he was the first to determine the mass-to-charge ratio of cathode rays. In 1908 he was knighted for his contributions to science and in 1912 he received the Order of Merit.]]> 2021-09-29 13:44:24 UTC https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778088989 mcphersone3 https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778100599 Ernest Rutherford found that the atom is mostly empty space, with nearly all of its mass concentrated in a tiny central nucleus. The nucleus is positively charged and surrounded at a great distance by the negatively charged electrons.

Some Facts About Ernest:
In 1899 Ernest Rutherford demonstrated that there were at least two distinct types of radiation: alpha radiation and beta radiation. He discovered that radioactive preparations gave rise to the formation of gases.]]> 2021-09-29 13:47:29 UTC https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778100599 mcphersone3 https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778115100 In 1913, Niels Bohr proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values. Electrons move around a nucleus, but only in prescribed orbits, and If electrons jump to a lower-energy orbit, the difference is sent out as radiation.

Some Facts About Niel:
In 1912 Bohr joined Rutherford. He realized that Rutherford's model wasn't quite right. By all rules of classical physics, it should be very unstable. For one thing, the orbiting electrons should give off energy and eventually spiral down into the nucleus, making the atom collapse.]]> 2021-09-29 13:51:12 UTC https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778115100 mcphersone3 https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778133320 Erwin Schrödinger showed that the quantization of the hydrogen atom's energy levels that appeared in Niels Bohr's atomic model could be calculated from the Schrödinger equation, which describes how the wave function of a quantum mechanical system (in this case, a hydrogen atom's electron) evolves.  In the world's most famous thought experiment, physicist Erwin Schrödinger described how a cat in a box could be in an uncertain predicament. The peculiar rules of quantum theory meant that it could be both dead and alive, until the box was opened and the cat's state measured.

Some Facts About Schrödinger:
In Wild Arms 3, the character of Shady the Cat, owned by Maya Schrödinger, is based on Schrödinger's cat, and is claustrophobic as a result of the "experiment".]]> 2021-09-29 13:55:53 UTC https://padlet.com/mcphersone3/bjete49x6a4llzdf/wish/1778133320