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Unit 1: Matter

TermDefinition
Matter Matter Can thus be defined as anything that has mass and takes up space
Physical Property A physical property is a characteristic that can be observed or measured without changing the identity of the substance
Chemical Property A chemical property relates to a substance's ability to undergo changes that transforms it into different substances
Physical Changes A change in a substance that does not involve a change in the identity of the substance is called a Physical Change solid to liquid to gas
Chemical Changes A change in which one or more substances are converted Into different substances is called a Chemical Change
Extensive Property Exstensive properties depend on the amountof matter that is present
Intensive Property In contrast Intensive properties do not depend on the amount of matter present
Ductillity The ability of a substance to be hammered thin or drawn out into a wire
Malleability The ability of a substance to be hammered or beaten into a sheet
Volume A measure of the size of a body or region in three-demensional space
Compressibility The measure of how much a given volume matter decreases when placed under pressure
Density Density is the ratio of mass to volume or mass divided by volume
Evaporation The change of a substance from liquid to a gas
Sublimation the process in which a solid changes directly into a gas (the term is sometimes also used for the reverse process)
Vaporization The process by which a liquid or solid changes to a gas
Element An element is a pure substance that cannot be broken down into simpler stable substances and is made of one type of atom
Compound A compound is a substance that can be broken down into simple stable substances Each Compound is made from the atoms of two or more elements that are chemically bonded
Heterogeneous Mixture Mixtures that are not uniform throughout are said to be heterogeneous
Homogeneous Mixture Mixtures that are uniform in composition are said to be homogeneous
Atom An Atom is the smallest unit of an element that maintains the chemical identity of that element
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