Station 2: Atomic Models
... those which pass through the opening are allowed to escape, and they follow a straight line to the gold foil. The figure below shows the experiment. ...
... those which pass through the opening are allowed to escape, and they follow a straight line to the gold foil. The figure below shows the experiment. ...
Intro Notes - Mrs. Gionta
... • A hydrogen bond forms when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom • In living cells, the electronegative partners are usually oxygen or nitrogen atoms ...
... • A hydrogen bond forms when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom • In living cells, the electronegative partners are usually oxygen or nitrogen atoms ...
Personal Introduction
... 5.7 Orbitals of similar energies can be The seven correspond to grouped into shells ...
... 5.7 Orbitals of similar energies can be The seven correspond to grouped into shells ...
The Periodic Table - TangHua2012-2013
... groups each group shares similar properties. • Horizontal Rows: Elements are arranged in periods ...
... groups each group shares similar properties. • Horizontal Rows: Elements are arranged in periods ...
power point notes
... Rutherford proposed that the atom consists of a tiny positively charged nucleus surrounded by a cloud of negatively charged electrons. The nucleus contains almost all of the mass of the atom and consists of protons and neutrons. The number of electrons surrounding the nucleus, equals the number of p ...
... Rutherford proposed that the atom consists of a tiny positively charged nucleus surrounded by a cloud of negatively charged electrons. The nucleus contains almost all of the mass of the atom and consists of protons and neutrons. The number of electrons surrounding the nucleus, equals the number of p ...
Atomic Theory
... But what was causing the elements to have the weights that they had and the density that they had? Why was this pattern so noticeable? John Dalton, in the 1800’s was able to put some context into what was happening. He envisioned an atom – and he said that the atom was was the smallest piece o ...
... But what was causing the elements to have the weights that they had and the density that they had? Why was this pattern so noticeable? John Dalton, in the 1800’s was able to put some context into what was happening. He envisioned an atom – and he said that the atom was was the smallest piece o ...
Lesson 27 History of Atomic Therory
... Electrons can only be found in those energy levels, never in between. They are “quantized” ...
... Electrons can only be found in those energy levels, never in between. They are “quantized” ...
Chapter 6 Notes
... elements was by Dmitri Mendeleev in the 1870s. He arranged the elements known at that time by their physical and chemical properties into groups. ...
... elements was by Dmitri Mendeleev in the 1870s. He arranged the elements known at that time by their physical and chemical properties into groups. ...
Atomic Timeline
... The energy of each electron keeps it in motion around the nucleus Atoms must contain some sort of positive charge Atoms are mostly empty space ...
... The energy of each electron keeps it in motion around the nucleus Atoms must contain some sort of positive charge Atoms are mostly empty space ...
History of the Atom
... 1. Each element made of really small particles called atoms 2. All atoms of a given element are identical 3. Atoms of different elements have different properties, like mass and chemical reactivity 4. Atoms aren’t changed by chemical reactions, just rearranged ...
... 1. Each element made of really small particles called atoms 2. All atoms of a given element are identical 3. Atoms of different elements have different properties, like mass and chemical reactivity 4. Atoms aren’t changed by chemical reactions, just rearranged ...
![ChemChapter_3[1]](http://s1.studyres.com/store/data/000730918_1-e981d4b122189d44b26201a884f03a71-300x300.png)
ChemChapter_3[1]
... John Dalton (1776-1844) • The Law of Multiple Proportions – If two or more compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers. ...
... John Dalton (1776-1844) • The Law of Multiple Proportions – If two or more compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers. ...
The evolution of Atomic Theory
... Several changes have been made to Dalton’s theory. Dalton said: Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties Modern theory states: Atoms of an element have a characteristic average mass which is uni ...
... Several changes have been made to Dalton’s theory. Dalton said: Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties Modern theory states: Atoms of an element have a characteristic average mass which is uni ...
Valence electrons and Lewis Dot Structures
... The electrons in the outermost shell are the ___________ ____________ the electrons on an atom that can be gained or lost in a chemical reaction. ...
... The electrons in the outermost shell are the ___________ ____________ the electrons on an atom that can be gained or lost in a chemical reaction. ...
Periodic table trends
... • Reactivity is how likely and violently the atom will react with other substances • Metals- reactivity decreases across a period and increases down a family • Non-metals- reactivity increases across a period and decreases down a family ...
... • Reactivity is how likely and violently the atom will react with other substances • Metals- reactivity decreases across a period and increases down a family • Non-metals- reactivity increases across a period and decreases down a family ...
The Periodic Table & Formation of Ions
... mass Placed elements with similar properties in columns Left blank spaces for undiscovered elements Was able to accurately predict properties of the undiscovered elements ...
... mass Placed elements with similar properties in columns Left blank spaces for undiscovered elements Was able to accurately predict properties of the undiscovered elements ...
Notes - RCSD
... Atoms are made of 3 particles: protons (+), neutrons (o), and electrons (-) Protons and neutrons together make up the nucleus of an atom Electrons move very quickly around the nucleus in an electron cloud The charges on protons (+) and electrons (-) cause them to be attracted to each other. This att ...
... Atoms are made of 3 particles: protons (+), neutrons (o), and electrons (-) Protons and neutrons together make up the nucleus of an atom Electrons move very quickly around the nucleus in an electron cloud The charges on protons (+) and electrons (-) cause them to be attracted to each other. This att ...
Periodic table and the atom
... Results = The atom was a ball of positive charges with small negative particles called electrons **DISCOVERED THE ELECTRON*** Model of the atom = PLUM PUDDING MODEL ...
... Results = The atom was a ball of positive charges with small negative particles called electrons **DISCOVERED THE ELECTRON*** Model of the atom = PLUM PUDDING MODEL ...
History of Atomic Theory Review Notes
... • Why: Bohr was trying to show why each element emitted its own unique frequency of energy as electrons jumped orbits. ...
... • Why: Bohr was trying to show why each element emitted its own unique frequency of energy as electrons jumped orbits. ...
Chapter 3 Discovering the atom and subatomic particles (History of
... protons and neutrons Proton (质子) is a positively charged particle in a nucleus. A proton is clearly 2000 times as heavy as an electron but has the same (reverse) electric charge as an electron. The number of protons each atom of a given element contains is called atomic number. Neutron (中子) is anoth ...
... protons and neutrons Proton (质子) is a positively charged particle in a nucleus. A proton is clearly 2000 times as heavy as an electron but has the same (reverse) electric charge as an electron. The number of protons each atom of a given element contains is called atomic number. Neutron (中子) is anoth ...
The Structure of Atoms
... Key Concept What effect does changing the number of particles in an atom have on the atom’s identity? Directions: Complete the chart with the correct terms or numbers from the word bank on the lines provided. Some terms or numbers may be used more than once or not at all. ...
... Key Concept What effect does changing the number of particles in an atom have on the atom’s identity? Directions: Complete the chart with the correct terms or numbers from the word bank on the lines provided. Some terms or numbers may be used more than once or not at all. ...
Chapter 3 Discovering the atom and subatomic particles (History of
... protons and neutrons Proton (质子) is a positively charged particle in a nucleus. A proton is clearly 2000 times as heavy as an electron but has the same (reverse) electric charge as an electron. The number of protons each atom of a given element contains is called atomic number. Neutron (中子) is anoth ...
... protons and neutrons Proton (质子) is a positively charged particle in a nucleus. A proton is clearly 2000 times as heavy as an electron but has the same (reverse) electric charge as an electron. The number of protons each atom of a given element contains is called atomic number. Neutron (中子) is anoth ...
Class 9 CBSE Test paper Solved Chapter 3: Structure of...
... and electronic configuration is 2,8,2. It can lose 2 electrons to get octet configuration thus its valency is 2. Oxygen has atomic number 8 and its electronic configuration is 2, 6. It can gain 2 electrons to get octet configuration thus its valency is 8-6=2 (iii) The atomic number is equal to numbe ...
... and electronic configuration is 2,8,2. It can lose 2 electrons to get octet configuration thus its valency is 2. Oxygen has atomic number 8 and its electronic configuration is 2, 6. It can gain 2 electrons to get octet configuration thus its valency is 8-6=2 (iii) The atomic number is equal to numbe ...
Ch. 7 Multiple Choice
... 1) Elements in the modern version of the periodic table are arranged in order of increasing __________. A) oxidation number B) number of isotopes C) atomic number D) atomic mass E) average atomic mass ...
... 1) Elements in the modern version of the periodic table are arranged in order of increasing __________. A) oxidation number B) number of isotopes C) atomic number D) atomic mass E) average atomic mass ...