Symbols
What symbol in a chemical reaction means yields or reacts to form?
arrow
To balance a chemical equation, each side of the equation has the same number of _________.
atoms of each element
What is the SI unit used to measure the number of particles in a substance?
Mole
Stoichiometry is based on ______________________.
The Law of Conservation of Mass
Which of the following is the empirical formula?
CO2
H2O2
CO2
What type of force must be overcome to melt ice?
Hydrogen bonds
In a chemical equation, what does (l) stand for?
liquid
Chemical equations must be balanced to satisfy ____________.
the law of conservation of mass
Avogadro's number is equal to
6.02 x 1023
Stoichiometry enables you to determine _____
the amount of products formed or the amount of reactants needed
What is the name of MgCl2 • 6H2O
Magnesium Chloride hexahydrate
If temperature is constant, what is the relationship between between pressure and volume?
Inverse
(Boyle's Law)
In a chemical reaction, what does (s) stand for
solid
In a combustion reaction, one of the reactants is _______________
oxygen
Which has a greater mass, a mole of carbon or a mole of copper?
copper
The amount of product that should be produced based on stoichiometric calculations is the ______________.
theoretical yield
Define limiting reactant
The reactant that determines how much product can be made. It is all used up in the reaction.
If volume is held constant, what is the relationship between pressure and temperature?
direct
In a chemical reaction, what does (g) stand for?
gas
In what type of chemical reaction do two compounds rearrange anions and cations into two new compounds?
double replacement
How many moles of carbon atoms are in a mole of C6H12O6 ?
six
The mole ratio is for two reactants is determined from the __________.
coefficients on reactants on the balanced chemical equation.
Name the SI unit for pressure
pascal
What is the significance of the triple point on a phase diagram?
It indicates the temperature and pressure at which solid, liquid and gas are present.
In a chemical equation, what does (aq) stand for?
aqueous solution
What type of chemical reaction can be assumed from the following model of a chemical reaction?
AB + C --> CB + A
single replacement reaction
What is molar mass?
The mass in grams of one mole of a substance.
What are the steps in solving a mass to mass stoichiometry problem?
1. Balance the chemical equation.
2. Convert grams to moles.
3. Set up a mole ratio.
4. Convert moles to grams.
List the intermolecular forces from weakest to strongest
dispersion forces
dipole-dipole force
hydrogen bond
An ideal gas differs from a real gas because the molecules of an ideal gas________.
have no attractions to each other; they are non-polar
have a very small (negligible) molar mass