Science 1206 Unit 3 Part 1
... When writing the formulas for compounds containing a polyatomic ion(s), you treat the ion as a single unit, not as individual elements. If you need to write a subscript for a polyatomic ion, then you must enclose the ion in brackets. Remember to use the charges on the polyatomic ions to determi ...
... When writing the formulas for compounds containing a polyatomic ion(s), you treat the ion as a single unit, not as individual elements. If you need to write a subscript for a polyatomic ion, then you must enclose the ion in brackets. Remember to use the charges on the polyatomic ions to determi ...
Summer - Honors Chemistry
... anions, and the name of that ion is given by adding “-ide” to the root of the element name (e.g. O-2 is oxide). If an atom loses electrons, it becomes positive and is called a cation. Metals form cations, and the name of the ion is the same as the metal. If more than one charge for a metal is possib ...
... anions, and the name of that ion is given by adding “-ide” to the root of the element name (e.g. O-2 is oxide). If an atom loses electrons, it becomes positive and is called a cation. Metals form cations, and the name of the ion is the same as the metal. If more than one charge for a metal is possib ...
205 Advances in Natural and Applied Sciences, 4(2): 205-209, 2010 ISSN 1995-0772
... A binary stellar system is simply one in which two stars orbit around a common center of mass, that is they are gravitationally bound to each other. Almost 50 percent of the stars in the sky are part of a binary or multiple stellar systems. A sub-class of binary systems are X-ray binaries, the syste ...
... A binary stellar system is simply one in which two stars orbit around a common center of mass, that is they are gravitationally bound to each other. Almost 50 percent of the stars in the sky are part of a binary or multiple stellar systems. A sub-class of binary systems are X-ray binaries, the syste ...
valence electrons
... • We use the Bohr Model because of the simplicity of drawing the valence electrons and the sharing or loss/gain of these valence electrons. • Nucleus is far too large relative to the distance of the electrons. • Remember that electrons do not orbit the nucleus, but drawing and using a model of the q ...
... • We use the Bohr Model because of the simplicity of drawing the valence electrons and the sharing or loss/gain of these valence electrons. • Nucleus is far too large relative to the distance of the electrons. • Remember that electrons do not orbit the nucleus, but drawing and using a model of the q ...
Document
... – No chemical bonding between components – Can be separated by physical means, such as straining or filtering – Heterogeneous or homogeneous ...
... – No chemical bonding between components – Can be separated by physical means, such as straining or filtering – Heterogeneous or homogeneous ...
Scientific Method - Virtual Medical Academy
... Chemistry:-The study of matter and the changes it can undergo MATTER:-Matter is any thing occupies space and has a mass. Matter------> has mass , mass to weight , occupies space. There are things you can see.. "e.x: water, tree, food". And there are things you can't see.. " air, gas in gas cylinders ...
... Chemistry:-The study of matter and the changes it can undergo MATTER:-Matter is any thing occupies space and has a mass. Matter------> has mass , mass to weight , occupies space. There are things you can see.. "e.x: water, tree, food". And there are things you can't see.. " air, gas in gas cylinders ...
Hydrogen Bonding
... At RT, oxygen and hydrogen: gaseous form; water molecule: liquid state due to Hydrogen Bonding between water molecules Water – Has important physical properties that make life possible on the Earth, ability to dissolve many other substances, serves as a medium in which a great variety of chemical ch ...
... At RT, oxygen and hydrogen: gaseous form; water molecule: liquid state due to Hydrogen Bonding between water molecules Water – Has important physical properties that make life possible on the Earth, ability to dissolve many other substances, serves as a medium in which a great variety of chemical ch ...
Chemical bond - Physical Science
... • For ionic compounds, the oxidation number is the same as the charge of the ion ▫ Ex: the sodium ion (Na+) has a charge of 1+ and an oxidation number of ...
... • For ionic compounds, the oxidation number is the same as the charge of the ion ▫ Ex: the sodium ion (Na+) has a charge of 1+ and an oxidation number of ...
makeup2
... 49. In a voltaic cell, oxidation occurs at the (A) anode (B) cathode (C) salt bridge (D) electrode at which electrons enter from the outside 50. The free energy change for the chemical reaction that occurs in a voltaic cell when it is discharging and producing an electric current must be (A) positiv ...
... 49. In a voltaic cell, oxidation occurs at the (A) anode (B) cathode (C) salt bridge (D) electrode at which electrons enter from the outside 50. The free energy change for the chemical reaction that occurs in a voltaic cell when it is discharging and producing an electric current must be (A) positiv ...
6.D.1: When the difference in Gibbs free energy between reactants
... For many atomic properties, trends within the periodic table (and relative values for different atoms and ions) can be qualitatively understood and explained using Coulomb’s Law, the shell model, and the concept of shielding/effective nuclear charge. These properties include ...
... For many atomic properties, trends within the periodic table (and relative values for different atoms and ions) can be qualitatively understood and explained using Coulomb’s Law, the shell model, and the concept of shielding/effective nuclear charge. These properties include ...
PowerPoint Lecture Chapter 17-20
... a. Atoms that make up your body were formed in ancient stars. b. Atoms that make up your body were previously a part of your ...
... a. Atoms that make up your body were formed in ancient stars. b. Atoms that make up your body were previously a part of your ...
Name: 1) At 1 atmosphere and 298 K, 1 mole of H O(l) molecules
... molecules have different average kinetic energies molecules have different molecular structures ...
... molecules have different average kinetic energies molecules have different molecular structures ...
Powerpoint
... of the first half-reaction is larger. Copper metal, rather than OH-, gives out electrons. In principle, if platinum electrode is used, platinum may also give out electrons to form platinum ion. But in practice, it seldom happens due to the very negative value of Eo for this process: Pt(s) Pt2+(aq) ...
... of the first half-reaction is larger. Copper metal, rather than OH-, gives out electrons. In principle, if platinum electrode is used, platinum may also give out electrons to form platinum ion. But in practice, it seldom happens due to the very negative value of Eo for this process: Pt(s) Pt2+(aq) ...
Unit 2 Review: Chemistry - Mr. Hoover's Science Classes
... Atomic mass - the average mass of an element’s atoms. Atomic mass is given in atomic mass units (amu). H has a mass of 1.01 amu. This means that iron atoms are about 55.85 times heavier than hydrogen atoms. Atomic masses are always expressed as decimal fractions. One reason that they do not have who ...
... Atomic mass - the average mass of an element’s atoms. Atomic mass is given in atomic mass units (amu). H has a mass of 1.01 amu. This means that iron atoms are about 55.85 times heavier than hydrogen atoms. Atomic masses are always expressed as decimal fractions. One reason that they do not have who ...
Chpt2 - Dr. Erdal ONURHAN
... the same size, mass and chemical properties. The atoms of one element are different from the atoms of all other elements. o Compounds are composed of atoms of more than one element. In any compound, the ratio of numbers of atoms pf any of the two elements present is either an integer or a simple fra ...
... the same size, mass and chemical properties. The atoms of one element are different from the atoms of all other elements. o Compounds are composed of atoms of more than one element. In any compound, the ratio of numbers of atoms pf any of the two elements present is either an integer or a simple fra ...
Chapter 7
... Ionic Compounds Have High Melting Points • There are large attractive forces between the ions. • Their arrangement around each other maximizes these attractive forces and minimizes the repulsive ones. • Therefore, a great deal of energy is required to break the bonds between ions in an ionic compou ...
... Ionic Compounds Have High Melting Points • There are large attractive forces between the ions. • Their arrangement around each other maximizes these attractive forces and minimizes the repulsive ones. • Therefore, a great deal of energy is required to break the bonds between ions in an ionic compou ...
Metastable inner-shell molecular state
Metastable Innershell Molecular State (MIMS) is a class of ultra-high-energy short-lived molecules have the binding energy up to 1,000 times larger and bond length up to 100 times smaller than typical molecules. MIMS is formed by inner-shell electrons that are normally resistant to molecular formation. However, in stellar conditions, the inner-shell electrons become reactive to form molecular structures (MIMS) from combinations of all elements in the periodic table. MIMS upon dissociation can emit x-ray photons with energies up to 100 keV at extremely high conversion efficiencies from compression energy to photon energy. MIMS is predicted to exist and dominate radiation processes in extreme astrophysical environments, such as large planet cores, star interiors, and black hole and neutron star surroundings. There, MIMS is predicted to enable highly energy-efficient transformation of the stellar compression energy into the radiation energy.The right schematic illustration shows the proposed four stages of the K-shell MIMS (K-MIMS) formation and x-ray generation process. Stage I: Individual atoms are subjected to the stellar compression and ready for absorbing the compression energy. Stage II: The outer electron shells fuse together under increasing ""stellar"" pressure. Stage III: At the peak pressure, via pressure ionization K-shell orbits form the K-MIMS, which is vibrationally hot and encapsulated by a Rydberg-like pseudo-L-Shell structure. Stage IV: The K-MIMS cools down by ionizing (""boiling-off"") a number of pseudo-L-shell electrons and subsequent optical decay by emitting an x-ray photon. The dissociated atoms return their original atoms states and are ready for absorbing the compression energy.MIMS also can be readily produced in laboratory and industrial environments, such as hypervelocity particle impact, laser fusion and z-machine. MIMS can be exploited for highly energy-efficient production of high intensity x-ray beams for a wide range of innovative applications, such as photolithography, x-ray lasers, and inertial fusion.