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Science

Chapter 1 Vocab

TermDefinition
Chemistry The study of the composition, structure, and properties of matter and the changes that matter undergoes.
Chemical Any substance that has a definite composition or is used or produced in a chemical.
Mass A measure of amount of matter in an object
Atom The smallest unit of an element that maintains the chemical properties of that element
Element Composed of one kind of atom which cannot be separated or broken down into simpler substances by chemical means.
Compound Substance made from the atoms of 2 or more elements chemically bonded.
Extensive Property A property that depends not the extent or size of a system.
Intensive Property A property that does not depend on the amount of matter present, such as pressure, temperature, or density.
Physical Property A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness.
Physical Change A change of matter from one form to another without a change in chemical.
Change of State The change of a substance from one physical state to another.
Liquid A type of biochemical that does not dissolve in water, including fats and steroids; liquids store energy and make up cell membranes. (definite volume and indefinite shape)
Solid The state of matter in which and shape of a substance are fixed. (definite volume and shape)
Gas A form of matter that does not have a definite volume or shape.
Plasma High temperature physical state of matter in which atoms move most of there electrons, particles that make up atoms.
Chemical Property Relates to a substance's ability to undergo changes that transform it into different substances
Chemical Change/Reaction A change in which one or more substances are converted into different substances.
Reactants The substances that react in a chemical change.
Products The substances that are formed by the chemical change.
Groups/Families The vertical columns of the periodic table.
Periods The horizontal rows of elements in the periodic table.
Metal An element that is a good electrical conductor and a good heat conductor.
Nonmetal An element that is a poor conductor of heat and electricity.
Metalloid An element that has some characteristics of metals and some characteristics of nonmetals.
Created by: Ashleyrc93
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