SECTIONS
General Stuff/Energy and Matter
Electron Configuration & The Periodic
Table
Section 8: Chemical Reactions and Equations
Go Here:
http://www.wfu.edu/~ylwong/balanceeq/balanceq.html
http://www.chemistry.ohio-state.edu/betha/nealChemBal/
Chemical Reactions-
Chemical Reaction: A process in which one or more substances are converted
into new substances with different physical and chemical properties.
Things with full sets of valence electrons generally don’t
react: they must have some potential energy by the nature of their
electrical
structure to react chemically.
Chemical equation: reactants => products
The mass is conserved, and this is true for each reactant and its
product, they are equal, in a balanced equation.
Classifying Reactions:
Direct combination: A + B => AB
Decomposition: AB => A + B
Single-Replacement: A + BX => AX + B
Double-Replacement: AX + BY => AY + BX
Section 9: Stoichiometry and the Mole
This website says more than I could ever say about stoichiometry, and
remains to the point. So I'll just shut up and let u look at it.
http://www.shodor.org/unchem/basic/stoic/index.html#mole
Section 10: Heat
Thermochemistry- the study of heat changes in reactions
Exothermic reactions- release heat
Endothermic reactions- absorb heat
If we hold pressure constant, heat is equal to the enthalpy change for
that reaction, denoted by change in H (Delta-H).
The change in H degrees is the enthalpy change for a reaction in which
both reactants and products are in their standard state.
Hess’s law: if reactions are added together, the change in enthalpy
for the reaction will be the sum of the enthalpy changes for the individual
steps.
Calorimetry-
Calorimetry- measures temp changes using a calorimeter to see what
change in enthalpy is
This all depends on how much heat is released as well ast he heat capacity
of whatever is taking in the heat.
Heat capacity- the amount of heat needed to raise the temperature of
the object by 1 degree celcius.
Note: Calorie is actually a kilocalorie.
Specific heat- the heat capacity of 1 gram of a substance
Heat- when kinetic energy goes form one thing to another.
Section 11: Gas Laws
http://wiley.com/college/chem/spencer053872/tutorial/gasproblems/gasproblems.html
On this website, you learn everything. You just need to press the “go
ahead” link to go further.
Made By: Alecia Waite
CIPLC Student in Mr. Williams' Chem Class