Topic 1.1 Introduction to the particulate nature of matter
- Atoms of different elements combine in fixed ratios to form compounds, which have different properties from their component elements.
- Mixtures contain more than one element and/or compound that are not chemically bonded together and so retain their individual properties.
- Mixtures are either homogeneous or heterogeneous.
course Materials
Class presentation to take notes on and put into notebook:
Topic 1.1 Intro to Particulate Nature of Matter
Homework Assignment:
Balancing Chemical Equations Practice
Study Guide Homework
Topic 1.1 Intro to Particulate Nature of Matter
Homework Assignment:
Balancing Chemical Equations Practice
Study Guide Homework
Balancing Chemical Equations Simulation
Balancing Chemical Equations Tutorial
Balancing Chemical Equations Tutorial #2
Topic 1.2 The mole concept
- Masses of atoms are compared on a scale relative to 12C and are expressed as relative atomic mass (Ar) and relative formula/molecular mass (Mr).
- Molar mass (M) has the units g mol-1.
- The empirical formula and molecular formula of a compound give the simplest ratio and the actual number of atoms present in a molecule respectively.
- The mole is a fixed number of particles and refers to the amount, n, of substance.
Course materials
Class presentation to take notes on and put into notebook:
Topic 1.2 The Mole Concept
Homework Assignment:
The Mole Concept
Significant Figures Rules & Practice
Topic 1.2 The Mole Concept
Homework Assignment:
The Mole Concept
Significant Figures Rules & Practice
Converting between mass, moles, and atoms tutorial
Topic 1.3 Reacting Masses and Volumes
- Reactants can be either limiting or excess.
- The experimental yield can be different from the theoretical yield.
- Avogadro’s law enables the mole ratio of reacting gases to be determined from volumes of the gases.
- The molar volume of an ideal gas is a constant at specified temperature and pressure.
- The molar concentration of a solution is determined by the amount of solute and the volume of solution.
- A standard solution is one of known concentration.
Course Materials
Homework Assignment:
Determining the Limiting Reagent and Theoretical/Experimental/Percent Yields
Study Guide Homework
Determining the Limiting Reagent and Theoretical/Experimental/Percent Yields
Study Guide Homework
Limiting Reagent Calculations Tutorial
Theoretical and Experimental Yield Tutorials
Gas Law Calculations tutorial
Molarity (concentration) calculations tutorial
Study guides for unit exam
Application and Skills checklist (IB specific): Stoichiometric Relationships Study Guide
Stoichiometric Relationship Practice Problems: Stoichiometric Relationships Practice Problems
Do all the problems in the study guide that we did not do as homework (MC - do even, SR - do odd)
Stoichiometric Relationship Practice Problems: Stoichiometric Relationships Practice Problems
Do all the problems in the study guide that we did not do as homework (MC - do even, SR - do odd)