Chapter 1.docx - Chapter 1.1 A Particulate View of the...

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Chapter 1.1 A Particulate View of the World: Structure Determines PropertiesAtoms are the basic particles that compose ordinary matter, and about 91 different types of atoms naturally existMolecules are atoms that bonded together in specific geometrical arrangements to form moleculesoThe properties of a substance radically depend on its shape***Insert spherical water molecule image from text book Pg. 36***Chapter 1.2 Classifying Matter: A Particulate ViewMatter is anything that occupies space and has massMatter comes in 3 main statesoSolid Matter: Particles are tightly packed and fixed in placeoLiquid Matter: Particles are closely packed but can moveoGaseous Matter: Particles are widely spaced and move freely*Crystalline and Amorphous solids??*A pure substance is made up of only one type of particles, and it’s composition is invariant while a mixture is a substance composed of two or more particles in proportions that cn vary from onesample to anotherAn element is a substance that can not be chemically broke down into simpler substances while a compound is a substance composed of two or more elements. Both of these are examples of pure substancesA Heterogeneous mixture has a composition the varies from one region to another while a homogeneous mixture is one that has a uniform composition throughoutChapter 1.3 The Scientific Approach to KnowledgeA hypothesis is a tentative interpretation of the observations in a experimentoGood hypotheses are falsifiable – It makes claims that can be confirmed or refuted by further observations.A scientific Law many times is created by a string of similar observationsoScientific law is a brief statement that summarizes past observations and predicts future onesMany well-established hypotheses can lead to the development of a scientific theoryo

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