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Unit 1: Matter
Term | Definition |
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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 |