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extensive properties
properties that depend on the amount of matter
ex: mass
intensive properties
properties that don't depend on the amount of matter
ex: color
A mixture that has the same proportion of components throughout is considered to be __________
homogeneous
If a material is tested and every sample has exactly the same properties and the same composition, it is either a ____________ or a ____________
homogeneous mixture; pure substance
basic research
research carried out for the sake of increasing knowledge
W
tungsten
Sn
tin
dissolving sugar in water is a ________ change
physical
mixtures
can be separated by physical means; each component in a mixture retains its own properties
pure substances
elements and compounds; they cannot be broken down physical means
evaporation is a _______ change
physical because it is just a change of state
burning is a ________ change
chemical change because it is irreversible
chemistry
the study of the composition, structure, and properties of matter, the changes it undergoes, and the energy involved
organic chemistry
the study of carbon containing compounds
inorganic chemistry
the study of nonorganic substances (metals and organometals)
physical chemistry
the study of properties and changes of matter and the related energy
analytical chemistry
the identification of the composition of materials
biochemistry
the study of substances and processes occurring in living things
theoretical chemistry
the understanding of the principles behind observed chemical behavior
applied research
research that is carried out to solve a problem
chemical change
change that occurs when one or more substances change into entirely new substances with different properties
physical change
change of matter from one form to another without a change in chemical properties
physical property
a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
chemical property
a property of matter that describes a substance's ability to participate in chemical reactions
chemical
any substance that has a defined compostition
mass
a measure of the amount of matter in an object
matter
anything that has mass and takes up three dimensional space
chemical reaction
the process by which one or more substances change to produce one or more different substances
metal
an element that is shiny and that conducts heat and electricity well
nonmetal
an element that conducts heat and electricity poorly and that does not form positive ions
metalloid
an element that has properties of both metals and nonmetals; sometimes referred to as a semiconductor
extensive properties
properties that depend on the amount of matter
ex: mass
intensive properties
properties that don't depend on the amount of matter
ex: color
what are the rows on the periodic table called
periods
what are the collums on the periodic table called
groups
what is the formula for celisus involving kelins
c=k-273
what is the formula for kelvin
k=c+273
what is the formula for Celsius involving Fahrenheit
c=5/9(f-32)
what is the formula for fahrenheit
f=9/5(C)+32
Note 
Flashcard (165)