A bond that forms between two ions of opposite charges
100
A bond that forms as the result of sharing electrons is a ____ bond.
Covalent Bond
100
What is the SI base unit used to measure the amount of a substance whose number of particles is the same as the number of atoms in 12 grams of carbon-12?
The mole
100
Give an example of evidence that a chemical reaction has taken place.
-Formation of a gas
-Formation of a precipitate
-Change in color
-Change in odor
100
How do you get to the number of moles from grams?
By dividing by the formula mass
200
The theory that atoms tend to have empty valence shells or full valence shells of eight electrons is _____.
The Octet Rule
200
The energy required to break the bonds in one mole of a chemical compound is the ____ ____.
Bond Energy
200
What is avogadro's number?
6.02 * 10^23
200
A Combustion Reaction produces ____ and ____.
CO2 and H2O
200
What controls the quantity of product that can form in a chemical reaction?
The limiting reactant
300
An ion with a positive charge is a ____ while a ion with a negative charge is a ____.
Cation, anion
300
What is the difference between a nonpolar covalent bond and a polar covalent bond?
In a nonpolar covalent bond, the elecons are shared equally while in a polar covalent bond, the electrons are pulled more closely to one of the atoms.
300
What is the formula for percentage composition?
The mass of the element / the mass of the whole compound * 100
300
Ions that are present in a solution in which a reaction is taking place but do not participate in the reaction are ____ ____.
Spectator ions
300
What is the difference between the theoretical yield and the actual yield?
The theoretical yield is the quantity of a product that should form in a reaction while the actual yield is the amount of product that was actually formed.
In most cases the actual yield is less than the mass that was expected.
400
The energy released when ionic bonds are formed is called ____ ____.
Can copper replace silver in the reaction Cu + AgNO3?
Yes because copper is the more active metal
400
Give a reason why a 100% yield is not obtained in an actual chemical process.
-Many reactions do not completely use up the limiting reactant. Instead, some of the products turn back into reactants.
-In many cases the main product must go through additional steps to separate it from other chemicals and some of the product may be lost in the process.
-There could be other reactions that use up the reactants. (Side Reactions)
500
When naming simple ions, ____ borrow their names from the names of the elements while ____ form from the stem of the element and end in -ide.
Cations, anions
500
What are the intermolecular bonds?
Dipole-dipole, hydrogen bond, Van Der Waals, Molecule- ion attraction.
500
What isotope is the basis for defining the atomic mass unit and the mole?
Carbon-12
500
In a double displacement reaction one of the products must be a ____.
A solid precipitate, a gas or a molecular compound such as water
500
Identify the limiting reactant of PCl3 + 3H2O --> H3PO3 + 3HCl