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Top 2: Intro Matter

Topic 2: Introduction to Matter

TermDefinition
matter anything that has mass and takes up space
substance a single kind of matter that is pure and has a specific set of properties
physical property a characteristic of a pure substance that can be observed without changing it into another substance
chemical property a characteristic of a substance that describes its ability to change into different substance
atom basic particle from which all elements are made; smallest particle of an element that has the properties of that element
element a substance that contains one kind of atom and cannot be broken down into a simpler form
molecule a neutral group of two or more atoms held together by covalent bonds
compound a substance made of two or more elements chemically combined in a specific ratio or proportion
mixture two or more substances that are together in the same place but their atoms are not chemically bonded
heterogeneous mixture mixed together, but not chemically bonded to each other; can easily see pieces like in salad or cereal
homogeneous mixture difficult or impossible to see the different parts like salt water or air
distillation separating liquids by boiling them; lower boiling point will vaporize first, leaving the other liquid behind
mass a measure of how much matter is in an object; SI unit g or kg
volume the amount of space that matter occupies; SI unit cm or mL
weight a measure of the force of gravity acting on an object; SI unit lbs (pounds)
density the measurement of how much mass of a substance is contained in a given volume; SI unit g/cm3 or g/mL
physical change a change that alters the form or appearance of a material but does not make the material into another substance
chemical change a change in which one or more substances combine or break apart to form new substances
Created by: muellershauna
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