GEN CHEM MT1 Flashcards
study of matter its properties structure composition
CHEMISTRY
whats about matter being studied in chemistry
PROPERTIES
STRUCTURE
COMPOSITION
matter have? (2)
MASS
VOLUME
amount of matter
MASS
amount of occupied space
VOLUME
properties that can be measured / observed without change of composition
PHYSICAL
composition stay the same
PHYSICAL CHANGE
freezing of water
PHYSCIAL CHANGE
molding of clay
PHYSICAL CHANGE
ability of substance to react with another substance
CHEMICAL properties
formation of new substance by reaction
CHEMICAL CHANGE
rusting, digestion
CHEMICAL CHANGE
two types pf physical properties
EXTENSIVE
INTENSIVE
observed by SI units ( mass, length, volume…)
EXTENSIVE
observed by not the amount but the characteristic
INTENSIVE
chemical properties give example (5)
COLOR CHANGE
EVOLUTION OF GAS
TEMP CHANGE
PRECIPITATE
EMISSION OF LIGHT
made up of only one kind of particle
PURE SUBSTANCE
has a fixed or constant structure
PURE SUBSTANCE
simplest form of matter composed of only one kind of atom
ELEMENT
two or more kind of atom combined CHEMICALLY IN DEFINITE PROPORTION
COMPOUND
combination of two or more substances retain their distinct identities
MIXTURE
two types of mixtures
HOMOGENEOUS
HETEROGENEOUS
solution with uniform in composition
HOMOGENEOUS
different in composition and can be seperated physically
HETEROGENEOUS
seperating using filter paper
FILTRATION
seperating by allowing the solid particles to settle at the bottom and liquid poor in another
DECANTATION
seperating using magnet to removeb magnetic solid from non magnetic components
MAGNETIC SEPERATION
seperating homogeneous mixtures of different boiling point
DISTILLATION
seperation complex mixture using chromatography paper
CHROMATOGRAPHY
mixture is heated and water vaporized leaving the particles in the dish or pan
EVAPORATION
extensive prroperties are
MASS LENGTH VOLUME
what does john dalton discovered?
ATOMIC THEORY OF MATTER
three laws that led with dalton’s atomic theory
LAW OF CONSERVATION OF MASS
LAW OF DEFINITE PROPORTIONS
LAW OF MULTIPLE PROPORTIONS
can neither be created or destroyed
MASS
the total mass of the reactions and the products involved is conserved
LAW OF CONSERVATION OF MASS
if a compound is broken down into its constituent elements the proportions will remain the same
LAW OF DEFINITE PROPERTIES
if two elements form more than 1 compound between them the ratios of the masses of the second elemnt which combined with the fixed mass of the first elemtn will always be the ratio of small whole numbers
LAW OF MULTIPLE PROPERTIES