Introduction to Green Chemistry
STEM Explained
Green chemistry is a field that looks at the sustainability of products and processes designed by people.
How Vehicles Pollute the Air
Backgrounders
Learn how vehicles affect air quality, including their contribution to smog.
Hydrogen Fuel Cell Vehicles
Backgrounders
Learn about vehicles that use hydrogen for fuel.
Types of Chemical Reactions
Backgrounders
Learn about the four main types of chemical reactions.
Evidence of Chemical Change
Backgrounders
Learn how to tell if a chemical reaction has taken place.
Chemical Reactions: Conditions & Speeds
Backgrounders
Learn about the special conditions that let some chemical reactions take place.
Catalytic Converters
STEM Explained
Learn about how catalytic converters make vehicle emissions less harmful.
![Hamilton Street Railway bus in downtown Hamilton, Ontario © Adam E. Moreira [CC BY-SA 3.0], Wikimedia Commons](/sites/default/files/styles/resource_card_image_360x300_/public/2019-08/Hamilton%20Street%20Railway%20bus%20in%20downtown%20Hamilton%2C%20Ontario%20%C2%A9%20Adam%20E.%20Moreira.jpg?itok=1ZSDJMZQ)
Fueling Internal Combustion Engines
Backgrounders
Learn about the wide variety of fuels used in vehicles.
What are Greenhouse Gases?
Backgrounders
This backgrounder explains what greenhouse gases are and how they contribute to climate change.
The Dating Habits of Archaeologists
STEM Explained
Radiocarbon dating is a method of radiometric dating. Learn how archaeologists use carbon isotopes to find the age of organic materials at archaeological sites.
The History and Uses of Hydrogen
STEM Explained
Hydrogen’s tendency towards combustion is what makes it both a dangerous chemical element and a useful energy source.
How Did a Piece of Canada End Up in Australia?
STEM Explained
Learn how geologists used radioactive dating to uncover geology shared by both Canada and Australia.