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46 Cards in this Set

  • Front
  • Back
changes between the gaseous, liquid, or solid states.
Changes of state
any change or reaction in which one or more substances are converted into different substances with different characteristic properties.
chemical change or chemical reaction
pure substance that can be decomposed into two or more simpler substances by an ordinary chemical change.
chemical compound
the ability of a substance to undergo a change that alters its identity.
chemical property
the study of the composition and structure of materials and the changes they undergo
a substance that cannot be seperated into other substances by any ordinary chemical change
describes processes that absorb heat
the ability to cause change or do work
describe processes that release heat
properties, including mass, length, and volume that depend on the amount of matter present.
extensive physical property
the state of any matter that has neither a definite shape nor a definite volume
gaseous state
the vertical columns of elements in the Periodic Table, numbered consecutively from 1 to 18.
groups or families
a mixture whos composition and properties are not uniform but that differ from point to point in the mixture
heterogeneous mixture
a mixture whose composition and properties are uniform throughout the mixture, also called a solution
homogeneous mixture
a testable statement
resistance to change in motion
properties that do not depend on the amount of matter present; they include melting point, boiling point, destiny, ductility, malleability, color, crystaline shape, and refreactive index
intensive physical property
the energy of an object in motion
kinetic energy
energry can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical changes
law of conservation energy
matter cannot be ethier created or destroyed in ordinary chemical and physical changes
law of conservation of mass
a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound
law of definite composition
a generalization that describes a wide variety of behaviors in nature
the state of any matter that has a definite volume but an indefinite shape
liquid state
a measure of the quanity of matter
anything that has mass and occupies space
an element that is a good conductor of heat and electricity
an element that has some properties characteristic of metals and others characteristic of nonmetals, and is a semi conductor
a combination of two or more kinds of matter, each of which retains its own composition and properties
an element that is a poor conductor of heat & electricity
the horizontal rows of elements in the periodic table, numbered 1 to 7 from the top down.
proportion of matter that has both the same chemical properties and the same physical properties
any change in a property of matter that does not result in a change in identity.
physical change
a property that can be observed or measured without altering the identity of a material
physical property
a solid that separates from a solution
energy that an object has because of its position or composition
potential energy
the new substances or substances produced by a chemical reaction or by an enzyme reaction
characteristics that enable us to distinguish one kind of matter from another
a homogeneous sample of matter that has the same composition and characteristic properties throughout
pure substance
nonnumerical information
qualitative information
numerical information
quanitative information
the substances that undergo a chemical reaction
a logical approach to the solution of problems that lend themselves to investigation by observing, generalizing, theorizing and testing
scientific method
the state of any matter that has a define shape and volume
solid state
a homogeneous mixture of two or more substances in a single phase
a broad generalization that explains a body of facts or phenomena
a measure of the earths gravitational attraction for matter