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26 Cards in this Set
- Front
- Back
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the study of composition, structure, and properties of matter and the changes that matter undergoes
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chemistry
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any substance that has a definite composition or is used or produced in a chemical process
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chemical
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the measure of the amount of matter in an object
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mass
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anything that has mass and takes up space
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matter
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the smallest unit of an element that maintains the chemical properties of that element
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atom
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a substance that cannot be separated or broken down into simpler substances by chemical means;
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ELEMENT
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a property that depends on the extent or size of a system
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extensive property
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a substance made up of atoms of two or more different elements joined by chemical bonds
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compound
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the change of a substance from one physical state to another
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change of state
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a change that occurs when one or more substances change into entirely new substances with different properties
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chemical change
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I property of matter that describes a substances ability to participate in chemical reactions
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chemical propertych
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the process by which one or more substances change to produce one or more different substances
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chemical reaction
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a property that does not depend on the amount of matter present, such as pressure, temperature, or density
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intensive property
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a change of matter from one form to another without a change in chemical properties
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physical change
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a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
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physical property
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in physical science, a state of matter that starts as a gas and then become ionized ; it consists of free moving ions and electrons, it takes on an electric charge, and its properties differ from those of a solid, liquid or a gas
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plasma |
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the state of matter in which volume and shape of a substance is fixed
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solid
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a form of matter that does not have a definite volume or shape
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gas
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the state of volume that has definite volume but no definite shape
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liquid
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a substance or molecule that participates in a chemical reaction
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reactant
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a vertical column of elements in the periodic table; elements in a group share physical properties
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group
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a vertical column of the periodic table
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family
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in chemistry, a horizontal row of elements in the periodic table
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period
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an element that has properties of n=both metalks and nonmetals ; sometimes referred to as a semiconductor
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mellatoid
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a element that is shiny and conducts heat and electricity well
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metal
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an element that conducts heat and electricity poorly and that does not form ions in an electrolytic solution
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nonmetal
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