Unit 8 Test: Stoichiometry
Authored by Robert Oliver
Science
9th Grade
NGSS covered
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1.
MATCH QUESTION
30 sec • 1 pt
Match each vocabulary term to its definition.
stoichiometry
A(n) __ is a ratio between the number of moles of any two substances in a balanced chemical equation.
percent yield
The __ of a chemical reaction is the amount of product produced by the reaction in reality.
theoretical yield
The __ is the maximum amount of product that can be produced from a given amount of reactant.
actual yield
The __ of a reaction gives the ratio of the actual yield to the theoretical yield.
mole ratio
__ is the study of the numerical relationships between products and reactants in a chemical
reaction.
Tags
NGSS.HS-PS1-7
2.
DRAG AND DROP QUESTION
30 sec • 1 pt
Shoichiometry is based on the law of conservation of (a) .
charge
volume
reactants
mass
Tags
NGSS.HS-PS1-7
3.
DROPDOWN QUESTION
30 sec • 1 pt
In a balanced chemical equation, the numbers of individual particles and the numbers of moles of particles are represented by the (a) .
chemical symbols
coefficients
subscripts
molar masses
4.
DRAG AND DROP QUESTION
30 sec • 1 pt
Mole ratios for a reaction are obtained from the (a) .
balanced chemical equation
total mass of products
periodic table
molar masses
5.
DRAG AND DROP QUESTION
1 min • 1 pt
In the decomposition reaction of compound AB into substances A and B, what is the number of mole ratios that can be formed?
(a)
3
9
1
Tags
NGSS.HS-PS1-7
6.
DRAG AND DROP QUESTION
1 min • 1 pt
Calculating the mass of a reactant from the coefficient in a chemical equation is an example of a __.
(a)
mass-to-mass conversion
mole-to-mole conversion
mass-to-mole conversion
7.
DRAG AND DROP QUESTION
30 sec • 1 pt
Percent yield of a product is a measure of a reaction’s (a) .
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