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Stoichiometry

Authored by Perry Lund

Chemistry

10th - 12th Grade

NGSS covered

Used 1+ times

Stoichiometry
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25 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

theoretical yield
mole ratio
actual yield
percentage yield

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the measured amount of a product obtained from a chemical reaction?

mole ratio
theoretical yield
percentage yield
actual yield

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Mole ratios are obtained from the

balanced chemical equation

periodic table

molar mass

reactant's electron configuration

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

When does a chemical reaction stop?

when the lab is finished

when the excess reactant is used up

when the limiting reactant is used up

chemical reactions never stop

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The limiting reactant

slows the reaction down
is used up first
is the reactant that is left over
controls the speed of the reaction

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The reactant that is not completely used up in a chemical reaction is called the __________ .

spectator reagent

limiting reagent

excess reagent

catalyst

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first thing you must do to solve a stoichiometry problem?

write a balanced equation

panic without a periodic table

write a balanced electron configuration

count the number of molecules in the equation

Tags

NGSS.HS-PS1-7

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