Unit 2 - BIO CHEM (Chem focused) Flashcards
def. Matter
anything that occupies space and has mass (any state of matter)
def. Element
substance that cannot be broken down into other substances
def. Compound
consists of x2 or more elements in a fixed ratio
EMERGENT PROPERTY OCCURS AT THIS LEVEL
more common than pure state of element
what are the most common elements of life?
CHNOPS
Carbon
Hydrogen
Nitrogen
Oxygen
Phosphorous
Sulfur
def. Trace Elements
elements essential to functioning but only in small quantities varies by organism
ex. IRON in blood
def. Atom
smallest units of matter that retains property of an element
def. proton
subatomic particle w/ single pos. charge
def. neutron
electrically neutral subatomic particle
def. electron
subatomic particle w/ single neg. charge
x2 subatomic particles in the NUCLEUS
Protons & Neutrons
def. Nucleus
center core of an atom
def. atomic number
determined by unique # of protons
def. mass number
determined by an individual atoms mass (p+n)
def. Atomic Mass
technically includes electrons
def. Isotopes
same # of protons and same chemical behavior (same # of e) but diff # of neutrons
Weighted Atomic Mass
