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Limiting Reagents

Authored by Joseph Stevens

Science

11th Grade

NGSS covered

Used 76+ times

Limiting Reagents
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21 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich.  If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

bread
jelly
peanut butter
sandwich

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

30 sec • 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.

3.

MULTIPLE CHOICE QUESTION

30 sec • 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.

Tags

NGSS.HS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

spectator reagent
limiting reagent
excess reagent
catalyst

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When you use a balanced chemical equation to calculate the amount of a product on paper it is referred to as the 

experimental value
theoretical value
true amount
percent yield

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to identify the limiting reagent?

The limiting reagent speeds up the reaction.

The limiting reagent controls the amount of product formed.

If there is no limiting reagent, the reaction will not occur.

No stoichiometry calculations can be done without a limiting reagent.

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Identify the limiting reagent when 6.00 moles HCl combines with 5.00 moles Mg to form MgCl2.
 
1 Mg +  2 HCl --> 1 MgCl2  +  1 H2   
 

Mg
H2
MgCl2
HCl

Tags

NGSS.HS-PS1-7

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