chapter 1 part 2 Flashcards
branch of chemistry that involves the study of substances and processes occurring in living things
biochemistry
branch of chemistry that deals with substances containing carbon
organic chemistry
branch of chemistry using mathematical models and computer models
theoretical chemistry
definition of a chemical
any substance that has a definite composition
fundamental building block of matter is the
atom
an element is made up of one type of
atom
extensive properties include
volume and mass
intensive properties
density
if a mixture is uniform in composition its is considered to be
homogeneous
what is the shininess of a metal called
luster
carbon is classified as a
nonmetal
silicon is a
metalloid
common forms of energy
kinetic potential heat electrical light chemical
branches of chemistry
organic analytical inorganic biochemistry physical theoretical
a scientific law is
a statement based on experiments that are true and no exceptions are known
two of the fundamental laws of nature
Law of Conservation of Matter
and
Law of Conservation of Energy
law of conservation of matter says
matter can not me created nor destroyed
Law of conservation of energy says
energy cannot be created nor destroyed in a chemical reaction. only converted from one form to another
the laws of conservation of matter and energy can be combined to say the amount of matter and energy in the world is fixed.
E=mc^2
Who made the theory of Relativity
Albert Einstein
what does e- m- c- stand for
e- amount of energy liberated
m-mass of matter transformed into energy
c-speed of light
light is multiplied by 3x10^8 meters per second
an element is a
pure substance that cannot be broken down.
made of only one type of atom
a molecule is the
smallest particle of an element or compound that can have a stable independent existence.
extensive properties are properties that depend on
the amount of material examined
Intensive properties are properties that
do not depend on
horizontal rows of elements are called
period or series
diatomic molecules
hydrogen oxygen nitrogen chlorine fluorine bromine iodine
sucrose is
C12H22O11
1st group on periodic table is called
alkaline metals
17th group is called
halogens
