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Grogan - Vocab U2

Chemistry Unit 2 Vocabulary

QuestionAnswer
Chemistry Study of composition of matter and the changes it undergoes
Matter Anything that has mass and takes up space
Pure Substance Has fixed composition
Pure Substance Every sample has exactly same characterisitic, properties and composition
Solid Definite volume, definite shape
Solid Definite pattern to shape
Solid Held together by strong attractive forces
Solid Particles don't move much
Solid Particles packed together in relatively fixed positions
Liquid Definite volume, indefinite shape
Liquid Take shape of container
Liquid Particles close together but can move past one another
Liquid Particles move more rapidly than particles in a solid and causes them to flow b/c they temporarily overcome attractive forces
Liquid No pattern to shape
Gas Indefinite volume, indefinite shape
Gas expand to fill container & takes its shape
Gas Particles move quickly than particles in a liquid and at great distances from one another
Gas Has weak attractive forces
Plasma High-temp. state of matter in which atoms lose electrons
Plasma Found in fluorescent bulbs and the sun
Physical Property Characterisitic observed or measured w/out changing identity of substance
Physical Property Describes substance itself rather than how it can change into other substances
Extensive Properties Dependent on amt of substance present
Extrinsic Properties Dependent on amt of substance present
Extensive Properties Examples include length, volume and mass
Extrinsic Properties Examples include length, volume and mass
Intensive Properties Independent of amt of substance present
Intrinsic Properties Independent of amt of substance present
Intensive Properties Examples include color, density and smell
Intrinsic Properties Examples include color, density and smell
Density Physical property that is a ratio of mass of object to volume
Density units usually used are g/cm3 or g/mL
Density D = M/V
Physical Change Change in substance that doesn't involve change in identity of substance
State Change Physical change; substance changes from 1 physical state to another
Phase Change Physical change; substance changes from 1 physical state to another
Chemical Property Relates to substance's ability to undergo changes that transform it into different substances
Chemical Property Change where 1+ substance(s) converted into different substance(s)
Chemical Change Change where 1+ substance(s) converted into different substance(s)
Reactants Substance that reacts
Products Substance that's formed
Reactants On left side of equation
Products On right side of equation
Filtration Technique of separating heterogeneous mixtures by passing the mixture through a filter
Filtration Usually used to separate solid from liquid
Distillation Technique used to separate homogeneous liquid mixtures where the liquid mixture is boiled to produce vapor and then condensed again to liquid
Distillation Used for liquids w/ similar boiling points
Chromatography Method for separating homogeneous mixtures (such as ink)
Chromatography Separates mixtures into their different components
Element Made of only 1 kind of atom
Element Simplest forms of matter that can exist under normal laboratory conditions
Atom Smallest particle of element that retains the properties of that element
Law of Conservation of Mass In any chemical or physical change, mass isn't created or destroyed
Law of Conservation of Mass mass reactants = mass products
Periodic Table Tool used to organize elements into a grid of horizontal rows and vertical columns
Crystallization Technique used to separate mixtures that separates the components of a mixture based on the ability of each component to travel or be drawn across the surface of another material
Created by: kegrogan