October 29, 2010

This folder contains resources about the conservation of matter and stoichiometry.

**This unit is part of the Chemistry collection, an open source California digital textbook plus supplementary resources.**

- Science > Chemistry
- Science > General

- Grade 9
- Grade 10
- Grade 11
- Grade 12

Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.

Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.

Students know how to describe chemical reactions by writing balanced equations.

Students know the quantity one mole is set by defining one mole of carbon 12 atoms to have a mass of exactly 12 grams.

Students know one mole equals 6.02 x 10 to the 23rd power particles (atoms or molecules).

Students know how to determine the molar mass of a molecule from its chemical formula and a table of atomic masses and how to convert the mass of a molecular substance to moles, number of particles, or volume of gas at standard temperature and pressure.

Students know how to calculate the masses of reactants and products in a chemical reaction from the mass of one of the reactants or products and the relevant atomic masses.

Students know how to calculate percent yield in a chemical reaction.

Students know how to identify reactions that involve oxidation and reduction and how to balance oxidation-reduction reactions.

express and manipulate chemical quantities using scientific conventions and mathematical procedures, including dimensional analysis, scientific notation, and significant figures;

use the mole concept to calculate the number of atoms, ions, or molecules in a sample of material;

calculate percent composition and empirical and molecular formulas;

use the law of conservation of mass to write and balance chemical equations; and

perform stoichiometric calculations, including determination of mass relationships between reactants and products, calculation of limiting reagents, and percent yield.

understand the law of conservation of energy and the processes of heat transfer;