January 28 and 29
Intermolecular forces (bonds)
The attractive forces between the neighboring molecules.
Intramolecular forces(bonds)
The attractive forces between the atoms within a molecule.
Temperature
The measure of the kinetic energy of the molecules of a
substance
Kinetic Energy
The energy a molecule has because of its motion.
Kinetic Molecular Theory
A theory that explains the states of matter , based on the
concept that the particles in all states of matter are in constant motion.
Gas
State of matter with a vast separation of the individual gas molecules (Low density). Gases can easily be compressed or expanded freely to fill any space available.
Kelvin
A natural temperature scale in which the freezing point of
water is 273 degrees.
Absolute zero
The temperature at which all molecular motion theoretically stops.
Gas Pressure
The force that results from the simultaneous collisions of
billions of gas particles on an object
Vacuum
A space where no particles of matter exist
Atmospheric Pressure
The pressure exerted by air molecules in the atmosphere
Barometer
An instrument used to measure atmospheric pressure
Monometer
An instrument used to measure the pressure of a contained
gas.
Units used to measure pressure.
Millimeter of mercury(mmHg)
Pascal(pa) 760mm HG =1atm=101.3kpa
atmospheres(atm)
January 20-27
quarterly review
January 13 and 14
percent composition
the percent by mass of each of the elements in a compound
mass of element x 100
mass of compound
January 9 and 11, 2015
Limiting Reactant(Reagent)
any reactant that is used up first in a chemical reaction.
The limiting reactant determines the amount of product that can be formed.
excess reactant(reagent)
any reactant that is present in a quantity that is more than sufficient
to react with the limiting reactant.
There is an excess of this reactant after the limiting reactant is used up.
Theoretical Yield
The maximum amount of product that can be formed during a chemical reaction calculated from a balanced chemical equation.
Actual Yield
the amount of product produce when a chemical reaction is carried out
Percent yield
The ratio of the actual yield (the amount produced in the lab) to the theoretical yield expressed as a percentage; a measure of the efficiency of a reaction.
January 30
review FOR QUARTERLY
January 24, 2014
percent composition
the percent by mass of each of the elements in a compound
mass of element x 100
mass of compound
empirical formula
the formula with the smallest whole-number ratio of the elements in a compound
molecular formula
the formula that specifies the exact number of atoms of each element in a compound
JANUARY 21, 2014
Stoichiometry
The calculations of the quantities of the substances involved in a chemical reaction.
Theoretical yield
The maximum amount of product that can be formed in a chemical reaction.
The amount of product that is calculated from a balanced chemical equation.
Actual yield
The amount of product that is formed when a reaction is carried out in a laboratory.
percent yield
The measure of the efficiency of a chemical reaction.
Actual yield divided by the theoretical yield expressed as a percent
Theoretical yield
The maximum amount of product that can be formed in a chemical reaction.
The amount of product that is calculated from a balanced chemical equation.
Actual yield
The amount of product that is formed when a reaction is carried out in a laboratory.
percent yield
The measure of the efficiency of a chemical reaction.
Actual yield divided by the theoretical yield expressed as a percent
January 15,2014
Limiting reactant (Limiting Reagent)
The reactant that is used up first in a chemical reaction. The Limiting reactant determines the amount of product that can form in the reaction.
excess reactant (excess reagent)
the reactant that is present in a quantity that is more than sufficient to react with the limiting reactant.
JANUARY 13, 2014
Stoichiometry
The calculations of the quantities of the substances involved in a chemical reaction.
Theoretical yield
The maximum amount of product that can be formed in a chemical reaction.
The amount of product that is calculated from a balanced chemical equation.
Actual yield
The amount of product that is formed when a reaction is carried out in a laboratory.
percent yield
The measure of the efficiency of a chemical reaction.
Actual yield divided by the theoretical yield expressed as a percent
nsc-130_stoichiometry_worksheet.pdf | |
File Size: | 25 kb |
File Type: |
nsc-130_stoichiometry_worksheet_answers.pdf | |
File Size: | 252 kb |
File Type: |
January 30
Today the class used the entire time to review for the exam from the review packet and problems the teacher presented on the board.
January 28
Honors
mole
the amount of a substance that contains 6.02 x 10 ^23 particles of that substance
molar mass (gram formula mass)
the mass of a mole of any element or compound. Equal to the atomic mass expressed in grams
Students worked on the worksheets below
moles_molecules_grams_worksheet.pdf | |
File Size: | 51 kb |
File Type: |
Empirical Formula
a formula with the lowest whole-number ratio of elements in a compound
Scientific Method
Observation->hypothesis->experiment->theory
Students were given an exam review packet you can download below
January 24
Honors
Class began with a test
mole
the amount of a substance that contains 6.02 x 10 ^23 particles of that substance
molar mass (gram formula mass)
the mass of a mole of any element or compound. Equal to the atomic mass expressed in grams
Students worked on the worksheets below
molar_mass_ws.pdf | |
File Size: | 41 kb |
File Type: |