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Unit 2: Stoichiometry

Green chemistry industry icon

Introduction to Green Chemistry

STEM Explained

Green chemistry is a field that looks at the sustainability of products and processes designed by people.

Cars driving through thick smog

How Vehicles Pollute the Air


Learn how vehicles affect air quality, including their contribution to smog.

fuel cell car header

Hydrogen Fuel Cell Vehicles


Learn about vehicles that use hydrogen for fuel.

Shari Forbes à l'extérieur du centre de décomposition humaine

Shari Forbes (she/her/elle)

Career Profiles

Forensic Scientist

I conduct research to understand how the human body decomposes in our unique Canadian environment.
Hot air balloons at dawn

Lighter Than Air Vehicles


Learn about history and workings of lighter than air vehicles.

Hand writing chemical equations

Chemical Equations


Learn about how to write and balance chemical equations.

Heating a liquid over a flame in a lab

Types of Chemical Reactions


Learn about the four main types of chemical reactions.

Test tubes with colourful liquids

Evidence of Chemical Change


Learn how to tell if a chemical reaction has taken place.

Electroplating equipment

Chemical Reactions: Conditions & Speeds


Learn about the special conditions that let some chemical reactions take place.

Luke Ingersoll en tenue de plongée

Luke Ingersoll

Career Profiles

Occupational Diver

Luke Ingersoll is a diver, the owner of TayAus Diving Ltd., working in the aquaculture industry.
A mole and the number of atoms or molecules in a mole

Moles and Molarity: Counting and Chemistry from Donuts to Soap

STEM Explained

To count tiny things like atoms and molecules, scientists use a measurement called the mole.

Scuba divers

Boyle's Law


Learn about the theory of Boyle’s Law and explore examples of Boyle’s Law in everyday life.

Hot air balloons

Charles' Law and Gay-Lussac's Law


Learn about the theories of Charles’ Law and Gay-Lussac’s Law and explore examples of these laws in everyday life.

Pressure gauge

Kinetic Molecular Theory of Gases


Learn about the Kinetic Molecular Theory of Gases as well as about the units and tools used to measure gases.

Woman blowing up a balloon

Avogadro and the Ideal Gas Law


Learn about the theory of Avogadro’s Law and the Ideal Gas Law and explore examples in everyday life.