Worksheetsstoichiometry review
Total questions: 14
Worksheet time: 10mins
True or False. You must convert grams to moles using molar mass to do stoichiometry.
The quantitative relationship between the amount of reactants and products in a chemical reaction is called?
mole ratio
stoichiometry
molar mass
coefficient
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
1/2
2/1
3/4
4/3
What does the coefficient in front of reactants and products represent in balanced equations?
number of moles
type of reaction
position on the periodic table
number of compounds
In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?
10/6
3/4
4/3
2/3
In a chemical reaction, the mass of reactants ___.
is less than the mass of products
is greater than the mass of products
has no relationship to the mass of products
is equal to the mass of products
which law states that matter is neither created nor destroyed in a chemical reaction?
law of conservation of energy
Newtons 3rd law of motion
1st law of thermodynamics
law of conservation of mass
the conversion factor used to convert from mass to mole or mole to mass is
mole ratio
molar mass
mass number
none of these
Which of the following is NOT a type of stoichiometric conversion?
mole to mole
mole to mass
mass to molecule
mass to mass
the conversion factor used to convert from mole to mole is called
mole ratio
molar mass
mass number
none of these
__________ is defined as the relationship between reactants and products in a chemical reaction is called what?
mole ratio
stoichiometry
molar mass
chemical equation
the mole ratio is found using what in a chemical equation?
products only
reactants only
coefficients
reaction rate
