Limiting Reactants

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-ETS1-3

What is a limiting reactant?

• the reactant that determines how much product can be made
• the reactant that is in excess
• the product that you can make the most of
• the amount of reactants that react with each other

Tags

NGSS.HS-PS1-7

In this image, what are the information in red is called the_______.

• Product
• Reactant
• Chemical Subscript
• Yield

Tags

NGSS.HS-PS1-7

In this image, what are the information to the right of the arrow (in black) is called the_______.

• Product
• Reactant
• Chemical Subscript
• Yield

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the arrow in a chemical equation...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

1.Which statement is TRUE about the limiting reagent?

• It is completely used up in a reaction.

• It is the reactant which has the most mass.

• It is always one of the products.

• It is the substance which is in excess.

Tags

NGSS.HS-PS1-7

If the quantity of B is insufficient to react with all of A in the reaction A + B → C + D, which of the following statements is TRUE?

• A is the limiting reactant.

• B is the limiting reactant.

• No product can be formed.

• There is no limiting reactant.

Tags

NGSS.HS-PS1-7

What happens when the limiting reactant in a chemical reaction is completely used up?

• Excess reactants begin combining

• Reaction slows down

• Reaction speeds up

• Reaction stops

Tags

NGSS.HS-PS1-7

The limiting reactant

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

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-PS1-7