PPT format - Columbia University
... Section 1.2 The Composition of Matter and Section 1.3: The Atomic Theory of Matter. Matter: Matter is any material that occupies space and has mass. Atomic interpretation: Any material that contains atoms, which occupy space and have mass. Substance (idealization): A substance is a chemically pure ...
... Section 1.2 The Composition of Matter and Section 1.3: The Atomic Theory of Matter. Matter: Matter is any material that occupies space and has mass. Atomic interpretation: Any material that contains atoms, which occupy space and have mass. Substance (idealization): A substance is a chemically pure ...
pptx
... A brief review of chemistry Electron configuration in atoms: How do the electrons fit into the available orbitals? What are energies of orbitals? 1, 2, 3 … principle quantum number, tells you some about energy s, p, d … tells you some about geometric configuration of orbital 3d ...
... A brief review of chemistry Electron configuration in atoms: How do the electrons fit into the available orbitals? What are energies of orbitals? 1, 2, 3 … principle quantum number, tells you some about energy s, p, d … tells you some about geometric configuration of orbital 3d ...
Test 2 - Northwest Florida State College
... liters, or Molarity. 22) Calculate Molarity or volumes of a diluted or concentrated solution. (M1V1 = M2V2) 23) Use Molarity and mole ratios in calculations with balanced reactions. 24) Using the given Solubility Guidelines (below), identify a compound as soluble or insoluble. 25) Be able to identif ...
... liters, or Molarity. 22) Calculate Molarity or volumes of a diluted or concentrated solution. (M1V1 = M2V2) 23) Use Molarity and mole ratios in calculations with balanced reactions. 24) Using the given Solubility Guidelines (below), identify a compound as soluble or insoluble. 25) Be able to identif ...
Atoms and Molecules
... Atom Model1 An atom is the smallest particle of an element that contains the chemical properties of that element. Learn about atoms and their components (protons, neutrons, and electrons) in this program. Periodic Table2 Examine chemical symbols, atomic masses, electronegativity, electron shell ...
... Atom Model1 An atom is the smallest particle of an element that contains the chemical properties of that element. Learn about atoms and their components (protons, neutrons, and electrons) in this program. Periodic Table2 Examine chemical symbols, atomic masses, electronegativity, electron shell ...
9791/02 UNIVERSITY OF CAMBRIDGE INTERNATIONAL
... The resulting solution is made up to 100 cm3 in a volumetric flask, using distilled water. 10.0 cm3 of this solution is titrated against a 0.100 mol dm−3 solution of sodium hydroxide. An average titre of 41.60 cm3 is obtained. Calculate the amount, in mol, of excess hydrochloric acid in the 100 cm3 ...
... The resulting solution is made up to 100 cm3 in a volumetric flask, using distilled water. 10.0 cm3 of this solution is titrated against a 0.100 mol dm−3 solution of sodium hydroxide. An average titre of 41.60 cm3 is obtained. Calculate the amount, in mol, of excess hydrochloric acid in the 100 cm3 ...
quantum numbers - Cloudfront.net
... Shape of Electron Cloud (l) Also known as sublevel or subshell Indicates the shape of the orbital within a shell Only integer values between 0 and n-1 are allowed Affects orbital energies (bigger l = higher energy) All electrons in an atom with the same value of l are said to belong to the same subs ...
... Shape of Electron Cloud (l) Also known as sublevel or subshell Indicates the shape of the orbital within a shell Only integer values between 0 and n-1 are allowed Affects orbital energies (bigger l = higher energy) All electrons in an atom with the same value of l are said to belong to the same subs ...
Chemistry Review Fill in the blank
... b. What is the proper safety equipment used in every lab? c. What two things are important to remember when heating a test tube? 3. Chemistry is the study of __________________ and the ____________________ it undergoes. 4. Name the piece of equipment you would use to measure each of the following in ...
... b. What is the proper safety equipment used in every lab? c. What two things are important to remember when heating a test tube? 3. Chemistry is the study of __________________ and the ____________________ it undergoes. 4. Name the piece of equipment you would use to measure each of the following in ...
Characterizing Molecular Interactions in Chemical Systems
... folding, bonding or self assembly. The understanding of these types of interactions is necessary for the interpretation of many biological processes and chemical design tasks. While traditionally the electron density is analyzed to interpret the quantum chemistry of a molecular system, noncovalent i ...
... folding, bonding or self assembly. The understanding of these types of interactions is necessary for the interpretation of many biological processes and chemical design tasks. While traditionally the electron density is analyzed to interpret the quantum chemistry of a molecular system, noncovalent i ...
Chemistry to Remember
... in barometric pressure and gas pressure electronically. Temperature is measured by two different scales: degree Fahrenheit (˚F) and degree Centigrade (˚C). A thermometer is a column of mercury in a vacuum that expands and contracts depending on the thermometric activity of the substance surrounding ...
... in barometric pressure and gas pressure electronically. Temperature is measured by two different scales: degree Fahrenheit (˚F) and degree Centigrade (˚C). A thermometer is a column of mercury in a vacuum that expands and contracts depending on the thermometric activity of the substance surrounding ...
Chapter 3
... 37. molecules consist of the same element with different numbers of atoms and chemical structure are called … A. ions. B. neutrons. C. allotropes. D. isotopes. 38. An atom of the isotope 16S-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron) A. 15 p, 1 ...
... 37. molecules consist of the same element with different numbers of atoms and chemical structure are called … A. ions. B. neutrons. C. allotropes. D. isotopes. 38. An atom of the isotope 16S-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron) A. 15 p, 1 ...
Chapter 14 – Chemical Reactions
... Reactants – the _____________ materials of a chemical _____________ Products – the substances _____________ as a _____________ of a chemical _____________ Coefficient – a _____________ placed in _____________ of a chemical _____________ or _____________ All chemical equations must be balanced. Steps ...
... Reactants – the _____________ materials of a chemical _____________ Products – the substances _____________ as a _____________ of a chemical _____________ Coefficient – a _____________ placed in _____________ of a chemical _____________ or _____________ All chemical equations must be balanced. Steps ...
Chemistry Final Exam Review 2006-2007
... 2. Ionic compounds generally form: surround the carbon? a. Liquids a. 2 b. Gases b. 0 c. Crystals c. 8 d. molecules d. 4 3. In metallic bonding, the valence electrons of all 12. In nonpolar covalent bonds, valence electrons are atoms are shared in: a. Equally shared a. A nonpolar covalent bond b. Un ...
... 2. Ionic compounds generally form: surround the carbon? a. Liquids a. 2 b. Gases b. 0 c. Crystals c. 8 d. molecules d. 4 3. In metallic bonding, the valence electrons of all 12. In nonpolar covalent bonds, valence electrons are atoms are shared in: a. Equally shared a. A nonpolar covalent bond b. Un ...
Study Guide (Semester 2)
... To be able to explain how valence electrons are involved in bonding. 1. Define Valence Electrons. ______________________________________________________________________________ ______________________________________________________________________________ ____________________________________________ ...
... To be able to explain how valence electrons are involved in bonding. 1. Define Valence Electrons. ______________________________________________________________________________ ______________________________________________________________________________ ____________________________________________ ...
ap chemistry unit two notes
... Mass conservation illustrated if number of each atom before and after reaction remains constant. Definite composition illustrated by formation of compounds that always have the same atom ratio. Different compounds made of same elements have small whole number ratios of those elements ...
... Mass conservation illustrated if number of each atom before and after reaction remains constant. Definite composition illustrated by formation of compounds that always have the same atom ratio. Different compounds made of same elements have small whole number ratios of those elements ...
Figure 2: Alternative Periodic Table
... 103) Compare the elements Li, K, C, N a) Which has the largest atomic radius? K b) Place the elements in order of increasing ionization energy. K < Li < C < N 109) Which group of the periodic table has elements with high first ionization potentials and very negative electron affinities? Explain this ...
... 103) Compare the elements Li, K, C, N a) Which has the largest atomic radius? K b) Place the elements in order of increasing ionization energy. K < Li < C < N 109) Which group of the periodic table has elements with high first ionization potentials and very negative electron affinities? Explain this ...
Chapter 4-Arrangement of Electrons in Atoms
... • Niels Bohr -developed a model of a hydrogen atom that showed the electron circling the nucleus in a fixed path. – He determined that each energy level had a particular amount of electrons that could occupy each level. (fill in worksheet) ...
... • Niels Bohr -developed a model of a hydrogen atom that showed the electron circling the nucleus in a fixed path. – He determined that each energy level had a particular amount of electrons that could occupy each level. (fill in worksheet) ...
Unit 1: Sig. Figs, Compounds, Elements, Homo/Hetero mixtures
... 1. Which of the following gases does not exist in nature as a diatomic molecule? a. Nitrogen b. Helium c. Hydrogen d. oxygen 2. Ionic compounds generally form: a. Liquids b. Gases c. Crystals d. molecules 3. In metallic bonding, the valence electrons of all atoms are shared in: a. A nonpolar covalen ...
... 1. Which of the following gases does not exist in nature as a diatomic molecule? a. Nitrogen b. Helium c. Hydrogen d. oxygen 2. Ionic compounds generally form: a. Liquids b. Gases c. Crystals d. molecules 3. In metallic bonding, the valence electrons of all atoms are shared in: a. A nonpolar covalen ...
Electrons in a Shell - University of California, Berkeley
... of completely different character, and the concept of “hydrostatic” isotropic pressure that we used above is clearly inapplicable. As we keep increasing N, at some point the centrifugal energy corresponding to electrons with angular momentum L becomes equal to the energy of radial motion: ...
... of completely different character, and the concept of “hydrostatic” isotropic pressure that we used above is clearly inapplicable. As we keep increasing N, at some point the centrifugal energy corresponding to electrons with angular momentum L becomes equal to the energy of radial motion: ...
ch14 lecture 7e
... Compounds of 3A elements have more covalent character than similar 2A compounds. Aluminum has the physical properties of a metal, but its halides exist as covalent dimers. ...
... Compounds of 3A elements have more covalent character than similar 2A compounds. Aluminum has the physical properties of a metal, but its halides exist as covalent dimers. ...
Chemistry exam review
... 1. Which example indicates that a chemical change has occurred? a. When aqueous solutions are mixed, a precipitate is formed. b. As ammonium nitrate dissolves in water, it causes the temperature to decrease. c. Alcohol evaporates when left in an open container. d. Water is added to blue copper(II) c ...
... 1. Which example indicates that a chemical change has occurred? a. When aqueous solutions are mixed, a precipitate is formed. b. As ammonium nitrate dissolves in water, it causes the temperature to decrease. c. Alcohol evaporates when left in an open container. d. Water is added to blue copper(II) c ...
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.