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26 Cards in this Set
- Front
- Back
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Chemistry
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The scientific study of the composition structure and properties of matter and the changes that matter undergoes
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Chemical
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Any substance that has a defined composition
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Mass
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A measure of the amount of matter in an object
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Matter
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Anything that has mass and takes up space
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Atom
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The smallest unit of an element that maintains the chemical properties of that element
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Element
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A substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number
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Compound
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A substance made up of atoms of two or more different elements joined by chemical bonds
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Extensive property
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A property that depends on the extent of or size of a system
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Intensive property
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The property that does not depend on the amount of matter present such as pressure, temperature, or density
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Physical property
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Characteristic of a substance that does not involve a chemical change
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Physical change
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The change of matter from one form to another without a change in chemical properties
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change of state
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The change of a substance from one physical state to another
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Solid
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The state of matter in which the volume and shape of the substance are fixed
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Liquid
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The state of matter that has a definite volume but no definite shape
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Metal
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An element that is shiny and that conducts electricity well
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Nonmetal
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An element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution
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Metalloid
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An element that has properties of both metals and nonmetals
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Gas
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A form of matter that does not have a definite volume or shape
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Plasma
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A state of matter that starts as a gas and then becomes ionized; it consists of free moving ions and electrons, it takes in an electric charge, and it's properties differ from those of a solid, liquid or gas
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Chemical property
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A property of matter that describes the substances ability to participate in chemical reactions
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Chemical change
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Change that occurs when one or more substances change into entirely new substances with different properties
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Chemical reaction
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The process by which one or more substances change to produce one or more different substances
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Reactant
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A substance or molecule that participates in a chemical reaction
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Group
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Vertical column of elements in the periodic table; elements in a group share chemical properties
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Family
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A vertical column of the periodic table
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Period
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A horizontal row of elements in the periodic table
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