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Published byByron Stewart Modified over 9 years ago
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Chapter 1
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Students will understand atoms, the basic build blocks of matter. Students will know the three types of elements on the periodic table. Students will be able to identify the difference between chemical and physical change. Students will be able to identify the difference between intensive and extensive properties.
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Is the study of the composition, structure, and properties of matter. It is the study, also, of the processes matter undergoes, and the energy changes accompany those processes.
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Chemical Chemical- is any substance that has a definite composition.
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Matter is anything that occupies space Mass is a discrete measure of matter Compound is anything that can be broken down to simpler substances Extensive properties depend on the amount of matter present. Mass is one. Intensive properties do not depend on the amount of matter present, like density or melting point.
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Physical properties is a characteristic that can be seen without changing the substance, like its color. Physical change is a change that does not change the identity of the substance, like melting or freezing
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Solids has defined shape and volume. Liquids have defined volume but indefinite shape. Gases have indefinite shape and volume. Plasma is a high temperature state where the atoms have lost most of their electrons.
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Chemical Properties relate to the ability of a substance to undergo changes that transform it into different substances. Chemical Change is the change of one substance to another. Chemical reaction or change are the same. Reactants are the starting materials in the reaction. Products are the result of the reaction.
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This thing all things devours: Birds beasts trees flowers; Gnaws iron bites steel; Grinds hard stones to meal; Slays king ruins town And beats high mountain down. What am I?
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Mixtures are combinations of more than one substance. Solutions are the name of uniform mixtures. Homogeneous is the name for one or all uniform mixtures as a group. Heterogeneous is the name for one or all non- uniform mixtures. Pure Substances have a set and predictable composition. They also have uniform characteristics.
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Groups are the vertical columns on the periodic table, and are also called Families. Periods are the horizontal rows on the periodic table.
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Good heat conductor Good electrical conductor Almost all are solid at room temperature Malleable Ductile Luster Tungsten
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Poor conductor of heat Poor conductor of electricity Most are gases at room temperature Some are solids such as iodine, sulfur, carbon, phosphorous, and selenium. Bromine is a liquid.
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Just can’t decide. They have the characteristics of both metals and non-metals in differing degrees. All are solids at room temperature. They are mostly semiconductors. Used in much of the modern technology, computers, batteries, electronics, and science.
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Are all found in group 8A (18A). Are used in lighting and specialized industries and applications. Have very different behaviors that the other elements across the periodic table.
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