The Chemical Foundation Flashcards
All matter is composed of______
Atoms
Why are the chemical foundations important for biology?
Because chemistry provides is with molecules and bonding
Atoms are composed of_____,______,and _________.
Protons, Neutrons, and Electrons
Positively charged particles are _________
protons
Neutrally charged particles are _________
Neutrons
Negatively charged particles________
Electrons
Atoms of the same element that have different atomic mass numbers due to different numbers of Neutrons are called_________
Isotopes
Atoms that are either negatively or positively charged are called ______
Neutral atoms
_______Gain or loss of an electron
Ions
Positively charged ions
Cations
Negatively charged ions
Anions
_______processes potential energy
electrons
Electrons far from the nucleus have _____or____ energy
More,Less
______=the loss of an electron; therefore, becomes ionized and less negative
Oxidation
________= the gaining of an electron; therefore becomes more negative
Reduction
____ electrons=electrons in the outermost energy level of an atom
Valence
___,____, and ___ all are pared; therefore, balanced
He, Ne,Ar
the paring of the unpared electron creates______
bonds
_____ tend to establish completely full outer energy levels
Atoms
There are____naturally occurring elements. Only____ elements are found in living organisms.
90,12
(Organic coumpounds) 4 elements make up 96.3% of living organisms. Their names are _____,__________,___________,and__________
Carbon, Oxygen, Nitrogen, and Hydrogen
Cells contain mostly______
Water