Driving Chemistry Flashcards
What drives chem
The movement of electrons
Valence electrons at the most outer shell move around
Describe covalent bonds
Formed between similar electronegativity
Shared electrons bonds from outer shell
mostly non metals
Describe ionic bonds
Occurs between 2 different electronegative atoms One will lose an electron to the other. Transfer of electrons to the other non metals and metals forms cation and anion
Cations
lose electrons and are positively charged
Anions
gain electrons negatively charged
Molecules
2 or more atoms which are chemically bonded together
Polar molecules
atoms with different electro-negativities bound together
occur between different atoms
bonding electron found closer to one atom
Non-polar molecule
atoms with similar electro-negativites bound together
occur between identical atoms
bonding electrons found halfway
Hansen Solubility
Molecules of similar polarity can be mixed in another
Describe hydrogen bonds
Bond between hydrogen atom and another atom
Partially electrostatic force of attraction-weaker than covalent or iconic bonds
H20
Molecular mass
Mass of molecule: Sum of atomic masses of the element in a compound
The mole/ Avagadros number (Na)
6.02X10(23)
The mole
Chemical name given for the specific number of particles in a substance: atoms/ ions/ molecules
State the mole equation
n=mass (m)/ Molar mass
N- amount of moles
m- the grams or physical weight
Molar mass- the amount of protons and neutron within
What are common elements in the body
Nitogen N Carbon C Prosperous P Oxygen O Calcium Ca
