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PT 7th Science

Chapter 2/3 Science Vocabulary

QuestionAnswer
a pure substance that cannot be separated into simpler substances by physical or chemical means; grouped into categories by the properties they share element
a substance in which there is only one type of particle pure substance
properties that do not depend on the amount of the element present; a unique set of properties characteristic properties
elements that are shiny and are good conductors of thermal energy and electric current metals
elements that are usually dull and that are poor conductors of thermal energy and electric current nonmetals
semiconductors, elements that have properties of both metals and nonmetals metalloids
a pure substance composed of two or more elements that are chemically combined compound
the only way to break down a compound is through a chemical change
a combination of two or more substances that are not chemically combined mixture
a mixture that appears to be a single substance; composed of particles of two or more substances that are distributed evenly among each other solution
the process in which particles of substances separate and spread evenly throughout a mixture dissolving
the substance that is dissolved solute
the substance in which the solute is dissolved solvent
a substance that is not able to dissolve insoluble
solid solutions of metals or nonmetals dissolved in metals alloys
a measure of the amount of solute dissolved in solvent concentration
the amount of solute needed to make a saturated solution using a given amount of solvent at certain tempature solubility
a mixture in which particles of a material are dispersed throughout a liquid or gas, but the particles are large enough that they settle out suspension
a mixture in which the particles are dispersed throughout but are not heavy enough to settle out colloids
having a regular, repeating pattern periodic
the smallest particle in which an element can be divided and still retain its properties atom
law that states that the repeating chemical and physical properties of elements relate to and depend on the element's atomic numbers periodic law
horizontal row of elements(from left to right) on the periodic table period
each column of elements (from top to bottom) on the periodic table, also called a family group
a property that can be observed or measured without changing the identity of the matter physical property
a property of matter that describes a substance based on its ability to change into a new substance with different properties chemical property
the ability of a substance to react with one or more other substances to produce a chemical change reactivity
a table of elements created by Dmitri Mendeleev; given this name because the properties of the elements repeat in a periodic way periodic table of the elements
a substance that conducts thermal energy or electrical charges well conductor
able to be drawn or pulled into wire ductile
able to be pounded into thin sheets without shattering malleable
Created by: shontee01
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