Unit 1 - Matter

Matter Objectives

1.1 Moles & Molar Mass - SPQ-1.A - Calculate quantities of a substance or its relative number of particles using dimensional analysis and the mole concept.

1.2 Mass Spectroscopy of Elements - SPQ-1.B - Explain the quantitative relationship between the mass spectrum of an element and the masses of the element’s isotopes.

1.3 Elemental Composition of Pure Substances - SPQ-2.A - Explain the quantitative relationship between the elemental composition by mass and the empirical formula of a pure substance.

1.4 Composition of Mixtures - SPQ-2.B - Explain the quantitative relationship between the elemental composition by mass and the composition of substances in a mixture.

3.7 Solutions & Mixtures - SPQ-3.A - Calculate the number of solute particles, volume, or molarity of solutions.

3.8 Representations of Solutions - SPQ-3.B - Using particulate models for mixtures: a. Represent interactions between components. b. Represent concentrations of components.

3.13 Beer-Lambert Law - SAP-8.C - Explain the amount of light absorbed by a solution of molecules or ions in relationship to the concentration, path length, and molar absorptivity.

4.6 Introduction to Titrations - SPQ-4.B - Identify the equivalence point in a titration based on the amounts of the titrant and analyte, assuming the titration reaction goes to completion.  

Matter Big Ideas

Big Idea 1: Scale, Proportion, and Quantity (SPQ)

• Enduring Understanding SPQ-1: The mole allows different units to be compared

• Enduring Understanding SPQ-2: Chemical formulas identify substances by their unique combination of atoms. 

• Enduring Understanding SPQ-3: Interactions between intermolecular forces influence the solubility and separation of mixtures. 

• Enduring Understanding SPQ-4: When a substance changes into a new substance, or when its properties change, no mass is lost or gained. 

Big Idea 2: Structure and Properties (SAP)

• Enduring Understanding SAP-8: Spectroscopy can determine the structure and concentration in a mixture of a chemical species.