Copy of 427
... In the early nineteenth century John Dalton, an English Chemist, formalized this belief in his Atomic Theory which contains six basic points: ...
... In the early nineteenth century John Dalton, an English Chemist, formalized this belief in his Atomic Theory which contains six basic points: ...
Atomic Structure
... All matter was continuous –no matter how small a substance was, the original properties were the same. Matter was made of the four basic elements fire, water, air, earth. Did not know about atoms. ...
... All matter was continuous –no matter how small a substance was, the original properties were the same. Matter was made of the four basic elements fire, water, air, earth. Did not know about atoms. ...
The periodic table
... • As a result of equal sharing, the charges of the electrons will be equally distributed. • This happens whenever Carbon and Hydrogen bond together. • This also happens when two identical atoms bond together as in O2 or Cl2, etc. ...
... • As a result of equal sharing, the charges of the electrons will be equally distributed. • This happens whenever Carbon and Hydrogen bond together. • This also happens when two identical atoms bond together as in O2 or Cl2, etc. ...
Notes 1
... Atomic nuclei are composed of neutral particles called neutrons that have a mass which is close to that of the proton, which has a positive charge. The nuclei are held together by the nuclear (or ’strong’) forces. The charge of a proton is identical in magnitude to that of the electron to the best o ...
... Atomic nuclei are composed of neutral particles called neutrons that have a mass which is close to that of the proton, which has a positive charge. The nuclei are held together by the nuclear (or ’strong’) forces. The charge of a proton is identical in magnitude to that of the electron to the best o ...
Learning Targets Chapter 4
... and explain the result I can draw and explain the plum pudding model of an atom and state who created the model I can describe, draw, and analyze Rutherford’s gold foil experiment and the atomic model of the atom I can describe what Millikan discovered about atoms and how he made his ...
... and explain the result I can draw and explain the plum pudding model of an atom and state who created the model I can describe, draw, and analyze Rutherford’s gold foil experiment and the atomic model of the atom I can describe what Millikan discovered about atoms and how he made his ...
AP Unit 0: Chemical Foundations
... The AP test will have 1 point testing your knowledge of sig. figs. Other wise they will accept answers that are ±1 sig fig. All most every question has 3 sig. fig. Therefore if you report with 3 sig fig always you’re most likely to get it correct. ...
... The AP test will have 1 point testing your knowledge of sig. figs. Other wise they will accept answers that are ±1 sig fig. All most every question has 3 sig. fig. Therefore if you report with 3 sig fig always you’re most likely to get it correct. ...
BIOCHEMISTRY: THE CHEMICAL COMPOSITION OF LIVING
... Elements – unique substances that cannot be broken down into simpler substances by ordinary chemical methods • 4 elements –– carbon, oxygen, hydrogen, and nitrogen –– make up 96% of body weight ...
... Elements – unique substances that cannot be broken down into simpler substances by ordinary chemical methods • 4 elements –– carbon, oxygen, hydrogen, and nitrogen –– make up 96% of body weight ...
Chapter 2 PowerPoint
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found • No orbital can contain more than two el ...
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found • No orbital can contain more than two el ...
chapt02_lecture from text
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found • No orbital can contain more than two el ...
... • Key to the chemical behavior of an atom lies in the number and arrangement of its electrons in their orbitals • Bohr model – electrons in discrete orbits • Modern physics defines orbital as area around a nucleus where an electron is most likely to be found • No orbital can contain more than two el ...
Introduction to atoms
... average atomic mass? • Example 2: Cl has 2 isotopes, 35C and 37C. The average atomic mass of Cl is 35.5 amu. What is the natural abundance of the two isotopes? ...
... average atomic mass? • Example 2: Cl has 2 isotopes, 35C and 37C. The average atomic mass of Cl is 35.5 amu. What is the natural abundance of the two isotopes? ...
3-1: The Atom: From Philosophical Idea to Scientific Theory
... proportions, and the law of multiple proportions Summarize the five essential points of Dalton’s atomic theory Explain the relationship between Dalton’s atomic theory and the law of conservation of mass, the law of definite proportions, and the law of multiple proportions ...
... proportions, and the law of multiple proportions Summarize the five essential points of Dalton’s atomic theory Explain the relationship between Dalton’s atomic theory and the law of conservation of mass, the law of definite proportions, and the law of multiple proportions ...
Introduction to Atoms
... • Greek Philosopher • “uncutable particle” • Named the atom from the Greek word Atomos • Atoms are small, hard, different shapes and sizes, always moving and join together ...
... • Greek Philosopher • “uncutable particle” • Named the atom from the Greek word Atomos • Atoms are small, hard, different shapes and sizes, always moving and join together ...
History of the Atom
... Foil Experiment and suggested the following characteristics of the atom: ...
... Foil Experiment and suggested the following characteristics of the atom: ...
Thomson`s Atom
... • In the mass spectrometer, atoms enter the device and are ionized. • The ions are then accelerated through a magnetic field which bends the ion paths into a semicircular shape. • The radius of this path is dependent upon the mass of the particle (with all other factors such as speed and charge bein ...
... • In the mass spectrometer, atoms enter the device and are ionized. • The ions are then accelerated through a magnetic field which bends the ion paths into a semicircular shape. • The radius of this path is dependent upon the mass of the particle (with all other factors such as speed and charge bein ...
Contributions to Atomic Theory
... 9) I developed a wave equation which describes the behaviour of electrons in atoms. 10) My theories are back up by the fact that light is emitted from an atom only at certain frequencies. 11) Each element is composed of tiny particles called atoms which are unique for each element. 12) My theory sho ...
... 9) I developed a wave equation which describes the behaviour of electrons in atoms. 10) My theories are back up by the fact that light is emitted from an atom only at certain frequencies. 11) Each element is composed of tiny particles called atoms which are unique for each element. 12) My theory sho ...
Key to Review Questions - Dixie State University
... Six elements have been found or made in such small amounts that their physical properties are unknown. 21 elements have been found or made in such small amounts that their physical properties are unknown. The atoms found in bronze have ionic bonds holding them together. The atoms found in bronze ar ...
... Six elements have been found or made in such small amounts that their physical properties are unknown. 21 elements have been found or made in such small amounts that their physical properties are unknown. The atoms found in bronze have ionic bonds holding them together. The atoms found in bronze ar ...
Atoms
... History of Atomic Theory Thomson – (discovering the electron) Proposed that atoms were made up of smaller particles. Theory that smaller negatively charged particles are spread evenly around a positively charged nucleus. His model was called the plum-pudding model. ...
... History of Atomic Theory Thomson – (discovering the electron) Proposed that atoms were made up of smaller particles. Theory that smaller negatively charged particles are spread evenly around a positively charged nucleus. His model was called the plum-pudding model. ...
Ch 4 - USD305.com
... protons – NaCl- Sodium(11 protons/11 electrons), Chlorine (17 protons/17electrons). Sodium gives up electron, now a positive charge. Chlorine gains electron now a negative charge ...
... protons – NaCl- Sodium(11 protons/11 electrons), Chlorine (17 protons/17electrons). Sodium gives up electron, now a positive charge. Chlorine gains electron now a negative charge ...
Foundations of Atomic Theory
... size, mass, and other properties: atoms of Dalton’s Atomic Theory different elements differ in size, mass, and other properties 3. Atoms cannot be subdivided, created, or destroyed 4. Atoms of different elements combine in simple whole-number ratios to form chemical compounds 5. In chemical reacti ...
... size, mass, and other properties: atoms of Dalton’s Atomic Theory different elements differ in size, mass, and other properties 3. Atoms cannot be subdivided, created, or destroyed 4. Atoms of different elements combine in simple whole-number ratios to form chemical compounds 5. In chemical reacti ...
Atomic Structure Power Point
... Because of ISOTOPES ! An isotope is a form of an element that has the same number of protons, but different numbers of neutrons. The atomic mass on the periodic table reflects the average mass of all of the known isotopes of an element. Each isotope may have different characteristics. ...
... Because of ISOTOPES ! An isotope is a form of an element that has the same number of protons, but different numbers of neutrons. The atomic mass on the periodic table reflects the average mass of all of the known isotopes of an element. Each isotope may have different characteristics. ...
History of molecular theory
In chemistry, the history of molecular theory traces the origins of the concept or idea of the existence of strong chemical bonds between two or more atoms.The modern concept of molecules can be traced back towards pre-scientific Greek philosophers such as Leucippus who argued that all the universe is composed of atoms and voids. Circa 450 BC Empedocles imagined fundamental elements (fire (20px), earth (20px), air (20px), and water (20px)) and ""forces"" of attraction and repulsion allowing the elements to interact. Prior to this, Heraclitus had claimed that fire or change was fundamental to our existence, created through the combination of opposite properties. In the Timaeus, Plato, following Pythagoras, considered mathematical entities such as number, point, line and triangle as the fundamental building blocks or elements of this ephemeral world, and considered the four elements of fire, air, water and earth as states of substances through which the true mathematical principles or elements would pass. A fifth element, the incorruptible quintessence aether, was considered to be the fundamental building block of the heavenly bodies. The viewpoint of Leucippus and Empedocles, along with the aether, was accepted by Aristotle and passed to medieval and renaissance Europe. A modern conceptualization of molecules began to develop in the 19th century along with experimental evidence for pure chemical elements and how individual atoms of different chemical substances such as hydrogen and oxygen can combine to form chemically stable molecules such as water molecules.