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physical and chemical properties of matter
terms to study for concept test February 3rd and lab test feburary 2nd
21
Science
8th Grade
01/09/2017

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Term
physical property
Definition
any characteristic of a materiel that can be observed or attempted to be observed without changing the identity of the material
Term
examples of physical property
Definition
density,reflective,boiling point,malleability,freezing point,conductivity,magnetism,size color
Term
physical change
Definition
any change in size,shape,or state off matter in which the identity of the substances stays the same
Term
how do physical changes occur
Definition
because of changes in tempature
freezing,boiling ,melting,condensation
Term
volume
Definition
amount of space an object occupies
Term
density
Definition
mass per unit volume of an object(mass/volume)
Term
states of matter
Definition
whether a substance is solid,liquid,or gas depends on the temperature of the substance.
Term
solid
Definition
a material which has tightly packed particles which move slow enough that that the material maintains its shape
Term
liquid
Definition
a material which has particles which are less densely packed and faster than a solid and tend to move more freely over each other.
Term
gas
Definition
is a material with very widely spaced particles that are moving very fast
Term
plasma
Definition
is a gas energized with charged particles
Term
boiling point
Definition
as the temperature which pressure of the vapor in the liquid is the same as the pressure on the surface
Term
melting point
Definition
as the temperature when enough thermal energy has been added to a material for the particles to slip out of arrangement
Term
freezing point
Definition
as the temperature when enough thermal energy has been removed from a material for the particles to slow down and rearrange as a solid
Term
chemical property
Definition
characteristic of a substance that indicates whether it can undergo a certain chemical change (react)
Term
chemical reaction (change)
Definition
process in which one or more substances(reactants)are changed into new substances(products
Term
conservation of mass
Definition
the mass of all substances that are present before a chemical change equals the mass of all substances that remain after change
Term
what does kinetic theory explain
Definition
it explains the relationship between particle movement within a substance and thermal energy
Term
heat of fusion
Definition
as the amount of energy required to change a material between a solid and a liquid
Term
what are examples of materials that have specific chemical properties
Definition
acids,bases,flammable,corrosive,oxidizer,reducer
Term
what are examples of how a chemical change may be detected
Definition
change in color,new materials formed,release of energy,flames
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