Stoichiometry /EF & MF Vocabulary Quiz

The branch of chemistry that deals with the mass relationships of elements in compounds and the mass relationships among reactants and products in chemical reactions.

• stoichiometry

• chemistry

• organic chemistry

• qualitative chemistry

Tags

NGSS.HS-PS1-7

Coefficients in a balance chemical equation represents the

• masses of reactants

• number of moles of reactants

• number of atoms in each compound

• number of valance electrons

Tags

NGSS.HS-PS1-7

theoretical yield

• the amount of product actually produced

• the amount of product calculated for a reaction

• reactant which determines the amount of product produced

• reactant which is in excess in a reaction

Tags

NGSS.HS-PS1-7

excess reactant

• the amount of product actually produced

• the amount of product calculated for a reaction

• reactant which determines the amount of product produced

• reactant which is in excess in a reaction

limiting reactant

• the amount of product actually produced

• the amount of product calculated for a reaction

• reactant which determines the amount of product produced

• reactant which is in excess in a reaction

Tags

NGSS.HS-PS1-7

In a balance chemical equation, the mass of products must equal

• mass of reactants

• number of moles of reactants

• number of atoms in each compound

• number of valance electrons

Tags

NGSS.HS-PS1-7

mole ratio can be used to calculate the

• amount of energy

• speed of reaction

• mass of products from a known amount of reactants

• number of atoms

Tags

NGSS.HS-PS1-7

What is the mole ratio of O₂ to H₂O in the following equation

2H₂ + O₂ → 2H₂O

• 2 mol H₂ : 1 mol O₂

• 1 mol O₂ : 2 mol H₂O :

• 2 mol H₂ : 2 mol H₂O

• 1 mol O₂ : 1 mol H₂O

Tags

NGSS.HS-PS1-7

A chemist interested in the efficiency of a chemical reaction would calculate the

• mole ratio
• rate of reaction
• percent yield
• energy released

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

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