Science - 2018-19

CH.4 b - Stoichiometry

The student will investigate and understand that chemical quantities are based on molar relationships. Key concepts include:
b) stoichiometric relationships.

Bloom's Levels:  Analyze; Understand

Adopted: 2010

BIG IDEAS

  • Balanced chemical equations represent the ratios of substances that react with one another to produce different substances.

  • I can determine how many cookies I can make from a set of ingredients.

UNDERSTANDING THE STANDARD

Stoichiometry involves quantitative relationships. Stoichiometric relationships are based on mole quantities in a balanced equation.
Total grams of reactant(s) = total grams of product(s).

ESSENTIALS

In order to meet this standard, it is expected that students will

b) perform stoichiometric calculations involving the following relationships:

     - mole-mole;

     - mass-mass;

     - mole-mass;

     - mass-volume;

     - mole-volume;

     - volume-volume;

     - mole-particle;

     - mass-particle; and

     - volume-particle.

     identify the limiting reactant (reagent) in a reaction.

     calculate percent yield of a reaction.


KEY VOCABULARY

actual yield, excess reactant, limiting reactant, mole ratio, percent yield, stoichiometry, theoretical yield

Updated: Nov 19, 2017