CHEM 1001 Chapter Notes - Chapter 1: Unified Atomic Mass Unit, Chemical Equation, Molecular Mass
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12 Oct 2018
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CHEM 1001 Full Course Notes
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Chem 1001 chapter 1: fundamental concepts of chemistry (1. 1) atoms, molecules, and compounds. Atoms: the smallest component of an element- a typical atom consists of a nucleus of positively-charged protons and electrically neutral neutrons with negatively-charged electrons orbiting this nucleus. The number of protons defines the identity of an atom or its element. Molecules: a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. Chemical compound: a substance that contains more than one element. The type of bonds holding elements together in a compound can vary: two common types are covalent bonds and ionic bonds. (1. 2) measurements in chemistry. Physical properties: the properties of a sample the can be measured without observing a chemical reaction. Example: size, colour, density, mass volume, temperature, and boiling point. Chemical properties: the properties of a sample that are displayed only during a chemical transformation.
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