Ch-1-Matter&Measurement - Chapter1 M atter and M...

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Matter and Measurement Chapter 1
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2 Structure Determines Properties The properties of matter are determined by the atoms and molecules that compose it 1. composed of one carbon atom and two oxygen atoms 2. colorless, odorless gas 3. incombustible 4. does not bind to hemoglobin carbon dioxide 1. composed of one carbon atom and one oxygen atom 2. colorless, odorless gas 3. burns with a blue flame 4. binds to hemoglobin carbon monoxide
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3 Atoms and Molecules Atoms are submicroscopic particles are the fundamental building blocks of all matter Molecules two or more atoms attached together attachments are called bonds attachments come in different strengths molecules come in different shapes and patterns Chemistry is the science that seeks to understand the behavior of matter by studying the behavior of atoms and molecules
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4 Classification of Matter Matter is anything that has mass and occupies space We can classify matter based on whether it’s solid, liquid, or gas
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5 Solids The particles in a solid are packed close together and are fixed in position though they may vibrate The close packing of the particles results in solids being incompressible The inability of the particles to move around results in solids retaining their shape and volume when placed in a new container, and prevents the particles from flowing
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6 Crystalline Solids Some solids have their particles arranged in an orderly geometric pattern – we call these crystalline solids salt and diamonds
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7 Amorphous Solids Some solids have their particles randomly distributed without any long-range pattern – we call these amorphous solids plastic glass charcoal
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8 Liquids The particles in a liquid are closely packed, but they have some ability to move around The close packing results in liquids being incompressible But the ability of the particles to move allows liquids to take the shape of their container and to flow – however, they don’t have enough freedom to escape and expand to fill the container
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9 Gases In the gas state, the particles have complete freedom from each other The particles are constantly flying around, bumping into each other and the container In the gas state, there is a lot of empty space between the particles on average
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10 Gases Because there is a lot of empty space, the particles can be squeezed closer together – therefore gases are compressible Because the particles are not held in close contact and are moving freely, gases expand to fill and take the shape of their container, and will flow
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Classification of Matter by Composition Matter whose composition does not change from one sample to another is called a pure substance made of a single type of atom or molecule because composition is always the same, all samples have the same characteristics Matter whose composition may vary from one sample to another is called a mixture two or more types of atoms or molecules combined in
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Ch-1-Matter&Measurement - Chapter1 M atter and M...

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