Skip to main content

Unit 2: Stoichiometry

Farah Halsaad | Chimiste industrielle

Farah Halsaad

Industrial Chemist

Farah Halsaad is an Industrial Chemist, located in Ontario.
Platinum crystals

Catalytic Converters

STEM Explained

Learn about how catalytic converters make vehicle emissions less harmful.

Blue whale swimming

Can Whales Really Explode?

STEM Explained

When deceased whales wash up on shore, people fear they might explode. Gas laws, decomposition reactions and organic chemistry can help us understand this fear.

Scott Kelly et Terry Virts inspectent le système d’élimination du dioxyde de carbone de la SSI (Photo via Wikimedia Commons)

Carbon Dioxide on Earth and on the ISS

Backgrounders

Carbon dioxide is an important part of the air on Earth and in space. What is carbon dioxide? How is it measured? How can it affect us mentally and physically?

Hamilton Street Railway bus in downtown Hamilton, Ontario © Adam E. Moreira [CC BY-SA 3.0], Wikimedia Commons

Fueling Internal Combustion Engines

Backgrounders

Learn about the wide variety of fuels used in vehicles.

People playing ice hockey

Why Do Ice Rinks Stay Frozen?

STEM Explained

Every ice rink is an example of molecular bonding and gas laws at work!

What speeds up a chemical reaction?

What speeds up a chemical reaction?

Hands-on Activities

Learn about the role of yeast in this fun decomposition reaction.

What is an exothermic reaction?

What is an exothermic reaction?

Hands-on Activities

Things are heating up! Explore the temperature change that occurs in an exothermic reaction and the role of catalysts is this chemistry activity.

Hamilton, Ontario industrial area with Toronto skyline in the background

What are Greenhouse Gases?

Backgrounders

This backgrounder explains what greenhouse gases are and how they contribute to climate change.

A set of lipstick in various colours

The Chemistry of Lipstick

STEM Explained

Learn about the organic compounds that make up lipstick as well as about some of the chemistry that goes into this popular cosmetic.

Soapy hands

Stupendous Suds

STEM Explained

Every time you wash your hands with soap, there are complex chemical reactions taking place.

illustration of a hydrogen car

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 can I make a volcano?

How can I make a volcano?

Hands-on Activities

Create a model of an erupting volcano and learn about the structures of a stratovolcano in this hands-on activity.

Opening can of pop

The Chemistry of Pop

STEM Explained

There’s a lot of cool chemistry in a can of pop! Learn how solubility, chemical equilibrium, acids & bases and gas laws work in some of your favourite drinks.