What’s the idea of the model of the atom?

Energy is thought to exist in small invisible pockets called quanta and this theory was used to develop a model of the atom which had a central nucleus surrounded by shells of electrons (energy levels)

Reasoning for the atom

Diffrent properties must come from the diffrent shapes kf the material at their basic building block level

Electrons that are located on the outermost shell and are responsible for properties, bonding, and chemical reactions

All kf the other electrons in an atom beside the valence electrons, responsible for shielding

The tendency of atoms to prefer to have eight electrons in the valence shell

Short hand version to show the valence electron for main group elements (1A-8A)

Who discovered the first atom

Democritus, said they were unchangeable, indestructible, and always existed

Created the first model of the atom becahse he believed all matter was made out of tiny solid atoms. Solid sphere model, loved metoralagy and teaching

Created the 2nd atom model: plum pudding, because he discovered electrons and the model showed that atoms also contained negatively charged particles. He won a Nobel prize

Created the 3rd model of the atom which showed that atoms have a nucleus that’s positively charged but the rest is empty space. He was the first to split the atom

He was the 4th to make an atom model, he wanted to explain that electrons move around the nucleus specific energy levels. Liked soccer

Who was Schrödinger/ heinsburg

Was the 5th person to create the model of the atom. They developed the electron cloud model because electrons behave like waves and their exact location cannot be known precisely. They both hated eachother.

Was the 6th person to create the atom model. He discovered neutrons because of their weight. He updated the model to show that the nucleus contains both protons and neutrons. He wanted to go into math but accidentally went into science.

Low energy and frequency, long frequency

High energy and frequency, short wavelengths

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Unit 2: Electrons

Question	Answer
What’s the idea of the model of the atom?	Energy is thought to exist in small invisible pockets called quanta and this theory was used to develop a model of the atom which had a central nucleus surrounded by shells of electrons (energy levels)
Reasoning for the atom	Diffrent properties must come from the diffrent shapes kf the material at their basic building block level
Valence electrons	Electrons that are located on the outermost shell and are responsible for properties, bonding, and chemical reactions
Core electrons	All kf the other electrons in an atom beside the valence electrons, responsible for shielding
Octet rule	The tendency of atoms to prefer to have eight electrons in the valence shell
Lewis diagram	Short hand version to show the valence electron for main group elements (1A-8A)
Who discovered the first atom	Democritus, said they were unchangeable, indestructible, and always existed
Who was Dalton?	Created the first model of the atom becahse he believed all matter was made out of tiny solid atoms. Solid sphere model, loved metoralagy and teaching
Who is Tomson?	Created the 2nd atom model: plum pudding, because he discovered electrons and the model showed that atoms also contained negatively charged particles. He won a Nobel prize
Who is Rutherford	Created the 3rd model of the atom which showed that atoms have a nucleus that’s positively charged but the rest is empty space. He was the first to split the atom
Who was Bohr!	He was the 4th to make an atom model, he wanted to explain that electrons move around the nucleus specific energy levels. Liked soccer
Who was Schrödinger/ heinsburg	Was the 5th person to create the model of the atom. They developed the electron cloud model because electrons behave like waves and their exact location cannot be known precisely. They both hated eachother.
Who was Chadwick?	Was the 6th person to create the atom model. He discovered neutrons because of their weight. He updated the model to show that the nucleus contains both protons and neutrons. He wanted to go into math but accidentally went into science.
Red waves	Low energy and frequency, long frequency
Violet waves	High energy and frequency, short wavelengths
How to find valence electrons	1A-8A/ main group elements
How to find number of energy levels	Period #

Created by: Vivianasaccuzzo

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