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Chemistry Vocab ch.2

the smallest unit of an element that maintains the chemical properties of that element atom
a change that occurs when one or more substances change into entirely new substances with different properties chemical change
a change of matter from one form to another without a change in chemical properties physical change
a substance having a specific molecular composition chemical
the study of the structure, properties, and reactions of matter and the energy changes that accompany those reactions chemistry
a substance made up of atoms of two or more different elements joined by chemical bonds compound
a substance that cannot be separated or broken down into simpler substances by chemical means element
a form of matter that does not have a definite volume or shape gas
a vertical column of elements in the periodic table group or family
a state of matter that has a definite volume but not a definite shape liquid
measure of the amount of matter in an object mass
anything that occupies space and has mass matter
an element that is shiny and that conducts heat and electricity well metal
an element that has properties of both metals and non metals metalloid
an element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution non metal
a combination of two or more substances that are not chemically combined mixture
in chemistry; a horizontal row of elements in the periodic table period
a substance that forms in a chemical reaction product
a property of matter that describes a substances ability to participate in chemical reactions chemical property
a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness physical property
a sample of matter either a single element of a single compound that has definite chemical and physical properties pure substances
a substance or molecule that participates in a chemical reaction reactant
the state of matter in which the volume and shape of a substance are fixed solid
Created by: holmesem



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