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Nt1310 Unit 9 Study Guide

Decent Essays

1) Strong bonds
a. Covalent Bond – sharing of electrons between two elements
b. Ionic Bond – transfer of electrons between two elements
2) Moles – an amount of material (atoms, ions or molecules) that contains Avogadro’s number (6.022 x 1023) of particles.
3) Molarity – the concentration of a solution expressed in moles of solute per liter of solution
4) Molecular weight – the weight of one molecule of a molecular compound.
5) Daltons – a unit of mass identical to 1 atomic mass unit
6) Isotopes/ radioisotopes – atoms of an element containing different number of neutrons
7) Atomic number – the number of protons in the nucleus of an atom
8) pH = -log (H+)
a. acid – proton donor
b. base – proton acceptor
c. weak acids/bases – do not completely dissociate in water
d. …show more content…

Strong acids/bases – do completely dissociate in water.
9) (OH) X (H) = 10-14 means
10) Irreversible chemical reaction – where reactants can form products only, cannot go vice - versa vs reversible chemical reaction – where the reaction can go both sides
11) Law of mass action ( Le Chatlier’s Law) – A system at equilibrium responds to a stress in such a way that it relieves that stress.
12) Enthalpy (H)- The sum of the internal energy and the pressure – volume product of a system H= E + PV.
a. Entropy – A measure of how dispersed the energy in a system is at a specific temperature (S)
b. Diagram showing activation energy

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