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Lecture 2 - TCD Chemistry
... Material particles which cannot be divided into smaller particles, but they can react to give other elementary particles Protons, neutron, electrons (valid for nearly all atoms: exception the hydrogen atom) ...
... Material particles which cannot be divided into smaller particles, but they can react to give other elementary particles Protons, neutron, electrons (valid for nearly all atoms: exception the hydrogen atom) ...
Periodic Table
... “placement” in the table. B. Atomic Radius and the Periodic Table = atom size 1. patterns: increases from top to bottom and right to left 2. explanations: top to bottom (adding energy levels increases atomic radius); right to left ...
... “placement” in the table. B. Atomic Radius and the Periodic Table = atom size 1. patterns: increases from top to bottom and right to left 2. explanations: top to bottom (adding energy levels increases atomic radius); right to left ...
Pauli Exclusion Principle
... Atoms with 2 or more electrons have a new feature: Electrons are indistinguishable! g There is no way to tell them apart! ...
... Atoms with 2 or more electrons have a new feature: Electrons are indistinguishable! g There is no way to tell them apart! ...
Organic Chem, Study Aide
... 1. The hydrogens attached to a particular carbon are always written directly next to the carbon to which they are attached (either to the right (usually) or left (less often) of the C); 2. Halogens are treated like hydrogens except they are written after the H’s; 3. If there are groupings of atoms o ...
... 1. The hydrogens attached to a particular carbon are always written directly next to the carbon to which they are attached (either to the right (usually) or left (less often) of the C); 2. Halogens are treated like hydrogens except they are written after the H’s; 3. If there are groupings of atoms o ...
Lesson 2 - The Bohr and Quantum Mechanical Model of the Atom
... Bohr's model explains well: • how electrons occupy energy levels • maximum number of electrons at each level ...
... Bohr's model explains well: • how electrons occupy energy levels • maximum number of electrons at each level ...
An Introduction to Matter
... • Chemical Change: Sugar is a compound that can be easily decomposed to simpler substances by heating. One of the simpler substances is the black element carbon, which cannot be further decomposed by chemical or physical means. ...
... • Chemical Change: Sugar is a compound that can be easily decomposed to simpler substances by heating. One of the simpler substances is the black element carbon, which cannot be further decomposed by chemical or physical means. ...
Inorganic Chemistry Lesson 3
... Yes, it is possible to predict molecule’s composition, and to derive chemical formula. That can be done based of some property of atoms called valence. To demonstrate the concept of valence, let’s try to answer a following question using a common sense. We know that a compound formed by hydrogen and ...
... Yes, it is possible to predict molecule’s composition, and to derive chemical formula. That can be done based of some property of atoms called valence. To demonstrate the concept of valence, let’s try to answer a following question using a common sense. We know that a compound formed by hydrogen and ...
Chem 150 Answer Key Problem Introductory Quantum Chemistry 1
... Certain frequencies of the spectrum might be absorbed by water to excite vibrational, rotational, electronic or nuclear energy levels but the majority of frequencies will pass through water. Water appears colorless (unless when viewed through a layer of several meters, when it will look blue)because ...
... Certain frequencies of the spectrum might be absorbed by water to excite vibrational, rotational, electronic or nuclear energy levels but the majority of frequencies will pass through water. Water appears colorless (unless when viewed through a layer of several meters, when it will look blue)because ...
Practice Exam-Final Fall 2016 W-Ans
... Hint: The molecular formula is an integral multiple of empirical formula. That is, the molar mass = empirical molar mass x integer. From C: H = 80.00/12 : 20.00/1 = 6.66: 20 = 1: 3. So the empirical formula is CH3 and the empirical molar mass of CH3 = 12x1+1x3 =15. So the integer = 30/15 = 2. Thus t ...
... Hint: The molecular formula is an integral multiple of empirical formula. That is, the molar mass = empirical molar mass x integer. From C: H = 80.00/12 : 20.00/1 = 6.66: 20 = 1: 3. So the empirical formula is CH3 and the empirical molar mass of CH3 = 12x1+1x3 =15. So the integer = 30/15 = 2. Thus t ...
Chemistry Standards and Frameworks
... atomic orbitals. Atoms (usually nonmetals) of similar electronegativities can form covalent bonds to become molecules. In a covalent bond, therefore, bonding electron pairs are localized in the region between the bonded atoms. In metals valence electrons are not localized to individual atoms but are ...
... atomic orbitals. Atoms (usually nonmetals) of similar electronegativities can form covalent bonds to become molecules. In a covalent bond, therefore, bonding electron pairs are localized in the region between the bonded atoms. In metals valence electrons are not localized to individual atoms but are ...
23.32 KB - KFUPM Resources v3
... A) The hydrogen atom has only one orbital. B) The size of the hydrogen 1s orbital is defined as the surface that contains 90% of the total electron probability. C) The square of the wave function represents the probability distribution of the elctron in the orbital. D) In the quantum mechanical mode ...
... A) The hydrogen atom has only one orbital. B) The size of the hydrogen 1s orbital is defined as the surface that contains 90% of the total electron probability. C) The square of the wave function represents the probability distribution of the elctron in the orbital. D) In the quantum mechanical mode ...
Chem 2 AP Ch 7 MC Review Key
... Examine the following portions of orbital diagrams representing the ground-state electron configurations of certain elements. ...
... Examine the following portions of orbital diagrams representing the ground-state electron configurations of certain elements. ...
Chemical and Molecular Formulas PPT
... more than one chemical compound? A: Letters of the alphabet can be combined in many different ways to form words, the atoms of 2 or more elements can also be combined in different ways to form more than one type of compound • consider elements A&B: AB, A2B2, AB2 … • what does the subscript 2 represe ...
... more than one chemical compound? A: Letters of the alphabet can be combined in many different ways to form words, the atoms of 2 or more elements can also be combined in different ways to form more than one type of compound • consider elements A&B: AB, A2B2, AB2 … • what does the subscript 2 represe ...
Atomic Structure
... • Based on quantum theory, which says matter also has properties associated with waves. • According to quantum theory, it’s impossible to know the exact position and momentum of an electron at the same time. This is known as the Uncertainty Principle. • This model of the atom uses complex shapes of ...
... • Based on quantum theory, which says matter also has properties associated with waves. • According to quantum theory, it’s impossible to know the exact position and momentum of an electron at the same time. This is known as the Uncertainty Principle. • This model of the atom uses complex shapes of ...
PERIODIC TABLE OF THE ELEMENTS
... 6. Know what orbitals are. 7. Know and understand elements and ions. 8. Know how to break a compound down into its ionic components using Lewis dot structures and valence electrons. 9. Be able to compare and contrast, atomic number, atomic weight and ...
... 6. Know what orbitals are. 7. Know and understand elements and ions. 8. Know how to break a compound down into its ionic components using Lewis dot structures and valence electrons. 9. Be able to compare and contrast, atomic number, atomic weight and ...
Bio Boot Camp - Tredyffrin/Easttown School District
... – Ex. Plant roots to 400 feet up. • Surface Tension: Water spiders can walk on water. Water sticks together so tightly, causes a tension so certain things can “float” ...
... – Ex. Plant roots to 400 feet up. • Surface Tension: Water spiders can walk on water. Water sticks together so tightly, causes a tension so certain things can “float” ...
4 slides per page() - Wayne State University Physics and
... If hydrogen obeyed classical physics, we would have no quantized electron orbits. Therefore the transitions between orbits (energy levels) could be arbitrarily large or small. This leads to a continuous spectrum of emitted light. ...
... If hydrogen obeyed classical physics, we would have no quantized electron orbits. Therefore the transitions between orbits (energy levels) could be arbitrarily large or small. This leads to a continuous spectrum of emitted light. ...
Atomic Theory Review
... Atoms of a given element are identical in size, mass and other properties. Atoms cannot be divided, created or destroyed. Atoms of different elements combine in simple whole-number ratios to form chemical compounds. In chemical reactions, atoms are combined, separated or rearranged. Atoms may be spl ...
... Atoms of a given element are identical in size, mass and other properties. Atoms cannot be divided, created or destroyed. Atoms of different elements combine in simple whole-number ratios to form chemical compounds. In chemical reactions, atoms are combined, separated or rearranged. Atoms may be spl ...
Document
... An unknown white solid is discovered on the lab counter in room 2101. Miss Allen wants to know if it is ionic or covalent. Describe how you could use its properties to determine if it is ionic or covalent. Be sure to use at least 3 specific examples of properties (3 marks) ...
... An unknown white solid is discovered on the lab counter in room 2101. Miss Allen wants to know if it is ionic or covalent. Describe how you could use its properties to determine if it is ionic or covalent. Be sure to use at least 3 specific examples of properties (3 marks) ...
F. The Quantum Atom Theory - River Dell Regional School District
... 5. Dalton’s Atomic Theory 1. Matter is made of small particles-atoms 2. Atoms of a given element are identical in size, mass, but differ from those of other elements*. 3. Atoms cannot be subdivided or destroyed*. ( supports law of conservation of mass) 4.Atoms combine in small whole number ratios t ...
... 5. Dalton’s Atomic Theory 1. Matter is made of small particles-atoms 2. Atoms of a given element are identical in size, mass, but differ from those of other elements*. 3. Atoms cannot be subdivided or destroyed*. ( supports law of conservation of mass) 4.Atoms combine in small whole number ratios t ...
Chapter 3
... levels, an electron can have. For each energy level, the Schordinger’s equation also leads to a mathematical expression called an atomic orbital which describes the probability of finding an electron at various locations around the nucleus of. An atomic orbitals is represented pictorially as a regio ...
... levels, an electron can have. For each energy level, the Schordinger’s equation also leads to a mathematical expression called an atomic orbital which describes the probability of finding an electron at various locations around the nucleus of. An atomic orbitals is represented pictorially as a regio ...
Chapter 1-
... • All carbons in benzene are sp2 hybridized – Each carbon also has an empty p orbital ...
... • All carbons in benzene are sp2 hybridized – Each carbon also has an empty p orbital ...
Chemical bond
A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are ""strong bonds"" such as covalent or ionic bonds and ""weak bonds"" such as Dipole-dipole interaction, the London dispersion force and hydrogen bonding.Since opposite charges attract via a simple electromagnetic force, the negatively charged electrons that are orbiting the nucleus and the positively charged protons in the nucleus attract each other. An electron positioned between two nuclei will be attracted to both of them, and the nuclei will be attracted toward electrons in this position. This attraction constitutes the chemical bond. Due to the matter wave nature of electrons and their smaller mass, they must occupy a much larger amount of volume compared with the nuclei, and this volume occupied by the electrons keeps the atomic nuclei relatively far apart, as compared with the size of the nuclei themselves. This phenomenon limits the distance between nuclei and atoms in a bond.In general, strong chemical bonding is associated with the sharing or transfer of electrons between the participating atoms. The atoms in molecules, crystals, metals and diatomic gases—indeed most of the physical environment around us—are held together by chemical bonds, which dictate the structure and the bulk properties of matter.All bonds can be explained by quantum theory, but, in practice, simplification rules allow chemists to predict the strength, directionality, and polarity of bonds. The octet rule and VSEPR theory are two examples. More sophisticated theories are valence bond theory which includes orbital hybridization and resonance, and the linear combination of atomic orbitals molecular orbital method which includes ligand field theory. Electrostatics are used to describe bond polarities and the effects they have on chemical substances.