Document
... The rock rolling down the hill is a bit more complicated. As it rolls down, the rock’s potential energy is converted to kinetic energy. As it collides with other rocks on the way down, it transfers energy to them. The entropy of the system (the rock) and its surroundings has increased. ...
... The rock rolling down the hill is a bit more complicated. As it rolls down, the rock’s potential energy is converted to kinetic energy. As it collides with other rocks on the way down, it transfers energy to them. The entropy of the system (the rock) and its surroundings has increased. ...
atoms
... – The charge on the cation becomes the subscript on the anion. – The charge on the anion becomes the subscript on the cation. – If these subscripts are not in the lowest wholenumber ratio, divide them by the greatest common Atoms, ...
... – The charge on the cation becomes the subscript on the anion. – The charge on the anion becomes the subscript on the cation. – If these subscripts are not in the lowest wholenumber ratio, divide them by the greatest common Atoms, ...
Thermodynamics - WordPress.com
... Calculating Energy Transfer -We assume that the heat released by the first system (Q1) is equal is = to the heat absorbed by the second one (Q2), if they are considered to be isolated, with no energy loss. -when 2 systems at different temps are in contact, the thermal energy of the hotter one (syst ...
... Calculating Energy Transfer -We assume that the heat released by the first system (Q1) is equal is = to the heat absorbed by the second one (Q2), if they are considered to be isolated, with no energy loss. -when 2 systems at different temps are in contact, the thermal energy of the hotter one (syst ...
What is Thermodynamics?
... • An endothermic reaction absorbs heat from the surroundings, so in a scenario where the temperature of a system increases, one would expect such a reaction to be MORE favourable (i.e. the reaction wants heat, and supplying more heat by raising the T is helpful). • In contrast, exothermic reactions ...
... • An endothermic reaction absorbs heat from the surroundings, so in a scenario where the temperature of a system increases, one would expect such a reaction to be MORE favourable (i.e. the reaction wants heat, and supplying more heat by raising the T is helpful). • In contrast, exothermic reactions ...
Chemistry 11 – Course Review
... Element “X” is composed of the following naturally occurring isotopes: Isotope ...
... Element “X” is composed of the following naturally occurring isotopes: Isotope ...
Chapter 6 Notes
... • Elements in the same group of the periodic table have the same number of electrons in the outer most shell. These are the valence electrons. • The filled inner shell electrons are called core electrons. These include completely filled d or f sublevels. • We write a shortened version of an electron ...
... • Elements in the same group of the periodic table have the same number of electrons in the outer most shell. These are the valence electrons. • The filled inner shell electrons are called core electrons. These include completely filled d or f sublevels. • We write a shortened version of an electron ...
Section 3 Electron Configurations
... Bohr Model of the Hydrogen Atom • Niels Bohr proposed a hydrogen-atom model that linked the atom’s electron to photon emission. • According to the model, the electron can circle the nucleus only in allowed paths, or orbits. • The energy of the electron is higher when the electron is in orbits that a ...
... Bohr Model of the Hydrogen Atom • Niels Bohr proposed a hydrogen-atom model that linked the atom’s electron to photon emission. • According to the model, the electron can circle the nucleus only in allowed paths, or orbits. • The energy of the electron is higher when the electron is in orbits that a ...
File
... protons must be carbon and an atom with 92 protons must be uranium. If you change the protons, then you change the element. In addition to protons, the atoms of every element (except the simplest form of hydrogen) also contain neutrons. Isotopes occur when an element's atoms exist with different num ...
... protons must be carbon and an atom with 92 protons must be uranium. If you change the protons, then you change the element. In addition to protons, the atoms of every element (except the simplest form of hydrogen) also contain neutrons. Isotopes occur when an element's atoms exist with different num ...
4_ Chemical reactions
... Notice that the K+ and NO3- and ions don’t undergo chemical changes. They are in the exact same form on both sides of the equation. Ions that don’t undergo a chemical change during a chemical reaction are called spectator ions. If we omit the spectator ions, we will have the net ionic equation: Ag+( ...
... Notice that the K+ and NO3- and ions don’t undergo chemical changes. They are in the exact same form on both sides of the equation. Ions that don’t undergo a chemical change during a chemical reaction are called spectator ions. If we omit the spectator ions, we will have the net ionic equation: Ag+( ...
Ch 2 Atoms and Elements Student
... 1. Each element is made up of tiny indestructible particles called atoms. 2. All atoms of a given element have the same mass and other properties that distinguish them from atoms of other elements 3. Atoms combine in simple whole number ratios to form compounds. 4. Atoms of one element cannot ch ...
... 1. Each element is made up of tiny indestructible particles called atoms. 2. All atoms of a given element have the same mass and other properties that distinguish them from atoms of other elements 3. Atoms combine in simple whole number ratios to form compounds. 4. Atoms of one element cannot ch ...
Unit 1 Section 4 - Atomic Structure PPT
... Light can be thought of as a stream of particles where each particle carries a quantum of energy. Video - http://study.com/academy/lesson/what-is-a-photon-definition-energy-wavelength.html Return to TOC ...
... Light can be thought of as a stream of particles where each particle carries a quantum of energy. Video - http://study.com/academy/lesson/what-is-a-photon-definition-energy-wavelength.html Return to TOC ...
Atoms, Molecules and Moles
... strip an electron away from helium forming a helium ion ‡ with a charge of +1 that has the same number of electrons as hydrogen. What makes an atom carbon is the presence of 6 protons, whereas every atom of hydrogen has 1 proton and every atom of helium has 2 protons. The number of protons in an ato ...
... strip an electron away from helium forming a helium ion ‡ with a charge of +1 that has the same number of electrons as hydrogen. What makes an atom carbon is the presence of 6 protons, whereas every atom of hydrogen has 1 proton and every atom of helium has 2 protons. The number of protons in an ato ...
Chemical Compounds
... It is more concise to use chemical shorthand and write a chemical equation: 2 H2 + O2 → 2 H2O ...
... It is more concise to use chemical shorthand and write a chemical equation: 2 H2 + O2 → 2 H2O ...
UNIT 2 – ATOMIC THEORY AND STRUCTURE
... Atoms are ___________________ and ___________________ *(later proved wrong) Atoms of the same element are identical ...
... Atoms are ___________________ and ___________________ *(later proved wrong) Atoms of the same element are identical ...
Chapter 6 - Foothill College
... CH4(g) + 2O2(g) —> CO2(g) + 2H2O(l) ∆Hrxn = –890 kJ For the above reaction the value of ∆Hsys represents the difference in chemical potential energy between the products (final state) and the reactants (initial state) ∆Hsys = H(products) - H(reactants) So if ∆Hsys is a difference in potential energ ...
... CH4(g) + 2O2(g) —> CO2(g) + 2H2O(l) ∆Hrxn = –890 kJ For the above reaction the value of ∆Hsys represents the difference in chemical potential energy between the products (final state) and the reactants (initial state) ∆Hsys = H(products) - H(reactants) So if ∆Hsys is a difference in potential energ ...
Final Exam Review Packet
... tetraphosphorus decasulfide can be produced, assuming an 80.0% yield for the reaction a. b. c. d. e. ...
... tetraphosphorus decasulfide can be produced, assuming an 80.0% yield for the reaction a. b. c. d. e. ...
+ H 2 O
... Electrolytes and Nonelectrolytes Electrolytes- compounds that conduct an electric current in aqueous solution, or in the molten state – all ionic compounds are electrolytes because they dissociate into ions (they are also called “salts”) barium sulfate- will conduct when molten, but is insoluble ...
... Electrolytes and Nonelectrolytes Electrolytes- compounds that conduct an electric current in aqueous solution, or in the molten state – all ionic compounds are electrolytes because they dissociate into ions (they are also called “salts”) barium sulfate- will conduct when molten, but is insoluble ...
Chapter 6 Electronic Structure of Atoms
... Spin Quantum Number, ms • In the 1920s, it was discovered that two electrons in the same orbital do not have exactly the same energy. • The “spin” of an electron ...
... Spin Quantum Number, ms • In the 1920s, it was discovered that two electrons in the same orbital do not have exactly the same energy. • The “spin” of an electron ...
A Level Chemistry transition task
... Chemistry topic 1 – Electronic structure, how electrons are arranged around the nucleus A periodic table can give you the proton / atomic number of an element, this also tells you how many electrons are in the atom. You will have used the rule of electrons shell filling, where: The first shell holds ...
... Chemistry topic 1 – Electronic structure, how electrons are arranged around the nucleus A periodic table can give you the proton / atomic number of an element, this also tells you how many electrons are in the atom. You will have used the rule of electrons shell filling, where: The first shell holds ...
Example - GST Boces
... • Each element has been assigned a unique one-, two-, or three-letter symbol for its identification • The first letter of a symbol is always capitalized • Only recently discovered elements that don’t yet have permanent names are given three-letter symbols • Uncombined elements are written as monato ...
... • Each element has been assigned a unique one-, two-, or three-letter symbol for its identification • The first letter of a symbol is always capitalized • Only recently discovered elements that don’t yet have permanent names are given three-letter symbols • Uncombined elements are written as monato ...