Chapter 3
... 1. History of the Atomic Model: a. Explain how the following scientists contributed to the development of the modern atomic theory. Describe their model and explain limitations. o Dalton’s Billiard Ball Model o Thomson’s Raisin Bun Model o Rutherford’s Nuclear Model o Bohr’s Planetary Model b. Expla ...
... 1. History of the Atomic Model: a. Explain how the following scientists contributed to the development of the modern atomic theory. Describe their model and explain limitations. o Dalton’s Billiard Ball Model o Thomson’s Raisin Bun Model o Rutherford’s Nuclear Model o Bohr’s Planetary Model b. Expla ...
Atomic Structure Notes
... same size, mass and chemical properties. 3. The atoms of one element are different from the atoms of all other elements. 4. Atoms of one element can combine with atoms of other elements to form compounds. A given compound always has the same relative numbers and types of atoms. 5. Atoms are not crea ...
... same size, mass and chemical properties. 3. The atoms of one element are different from the atoms of all other elements. 4. Atoms of one element can combine with atoms of other elements to form compounds. A given compound always has the same relative numbers and types of atoms. 5. Atoms are not crea ...
PS7aChemistryReviewRevised
... What other categories are there? What is a mixture? Elements cannot be separated into anything simpler by human means – only smaller particles with the same ...
... What other categories are there? What is a mixture? Elements cannot be separated into anything simpler by human means – only smaller particles with the same ...
Chapter 3 notes
... “Billiard Ball” or “Marbles” Dalton's model says atoms are tiny, indivisible, indestructible particles Believed each atom had a certain mass, size, and chemical behavior determined by what kind of elements they make up. See next slide for the details…. ...
... “Billiard Ball” or “Marbles” Dalton's model says atoms are tiny, indivisible, indestructible particles Believed each atom had a certain mass, size, and chemical behavior determined by what kind of elements they make up. See next slide for the details…. ...
1.3.4 Atoms and molecules Name Symbol Definition SI unit Notes
... The concept of electronegativity was intoduced by L. Pauling as the power of an atom in a molecule to attract electrons to itself. There are several ways of defining this quantity. The one given in the table has a clear physical meaning of energy and is due to R.S. Mulliken. The most frequently used ...
... The concept of electronegativity was intoduced by L. Pauling as the power of an atom in a molecule to attract electrons to itself. There are several ways of defining this quantity. The one given in the table has a clear physical meaning of energy and is due to R.S. Mulliken. The most frequently used ...
How many significant figures are there in each of these
... - Dalton's theory sets LIMITS on what can be done with chemistry. For example: Chemistry can't convert lead (an element) into gold (another element). Sorry, alchemists! You can't have a compound form in a chemical reaction that contains an element that was not in your starting materials. You can onl ...
... - Dalton's theory sets LIMITS on what can be done with chemistry. For example: Chemistry can't convert lead (an element) into gold (another element). Sorry, alchemists! You can't have a compound form in a chemical reaction that contains an element that was not in your starting materials. You can onl ...
Ch. 6 notes
... wavelength of light that must be absorbed by a hydrogen atom in its ground state to reach this excited state. ...
... wavelength of light that must be absorbed by a hydrogen atom in its ground state to reach this excited state. ...
Chemistry Study Guide
... Thermal energy must be added to a system for a substance to change from a solid to a liquid to a gas Or Thermal energy must be removed from a system for a substance to change from a gas to a liquid to a solid. ...
... Thermal energy must be added to a system for a substance to change from a solid to a liquid to a gas Or Thermal energy must be removed from a system for a substance to change from a gas to a liquid to a solid. ...
AS Physics
... “Neutral constituent of an atom’s nucleus” Electron “Negatively charged particle orbiting the nucleus” Atomic number or Proton number “Number of protons in the nucleus (also equal to number of electrons)” Nucleon number or Mass number “Number of protons and neutrons in an atom’s nucleus” Isotope “A ...
... “Neutral constituent of an atom’s nucleus” Electron “Negatively charged particle orbiting the nucleus” Atomic number or Proton number “Number of protons in the nucleus (also equal to number of electrons)” Nucleon number or Mass number “Number of protons and neutrons in an atom’s nucleus” Isotope “A ...
Electron Configuration
... electrons are located in orbitals, is also known as the quantum model ◦ States electrons within an energy level are located in orbitals, regions of high probability for finding a particular electrons. ◦ Does not, however, explain how the electrons move about the nucleus to create these regions ...
... electrons are located in orbitals, is also known as the quantum model ◦ States electrons within an energy level are located in orbitals, regions of high probability for finding a particular electrons. ◦ Does not, however, explain how the electrons move about the nucleus to create these regions ...
File
... • Homogenous Mixture-a mixture with a composition that is uniform throughout, all the way down to the molecular level. • Hydrocarbon-any molecule consisting of only hydrogen and carbon atoms, typically fossil fuels and other compounds derived from them. • Ion- a charged atom, it has either gained or ...
... • Homogenous Mixture-a mixture with a composition that is uniform throughout, all the way down to the molecular level. • Hydrocarbon-any molecule consisting of only hydrogen and carbon atoms, typically fossil fuels and other compounds derived from them. • Ion- a charged atom, it has either gained or ...
Bohr Model of the Hydrogen Atom
... effects). While ultimately, the model used to justify the result of part (b) is fundamentally wrong, it is still a pleasing result which can be obtained without fancy electromagnetic techniques. One of the things which ultimately led physicists to suspect that this picture was completely wrong is th ...
... effects). While ultimately, the model used to justify the result of part (b) is fundamentally wrong, it is still a pleasing result which can be obtained without fancy electromagnetic techniques. One of the things which ultimately led physicists to suspect that this picture was completely wrong is th ...
Joseph John Thomson - SCIENCE
... In the third experiment, Thompson determined the relationship between the charge and mass of cathode rays by measuring how much is diverted by a magnetic field and the amount of energy they carry. He found that the charge / mass ratio was more than a thousand times the hydrogen ion, suggesting that ...
... In the third experiment, Thompson determined the relationship between the charge and mass of cathode rays by measuring how much is diverted by a magnetic field and the amount of energy they carry. He found that the charge / mass ratio was more than a thousand times the hydrogen ion, suggesting that ...
Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning ""uncuttable"". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called ""uncuttable atom"" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term ""elementary particles"" to describe the ""uncuttable"", though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.