Skip to main content

The Material World

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

Backgrounders

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

fuel cell car header

Hydrogen Fuel Cell Vehicles

Backgrounders

Learn about vehicles that use hydrogen for fuel.

Vegetables and fruits on display

Plant Pigments

Backgrounders

Why are there so many colours of plants? Learn about plant pigments and their role in plants.

Pepper plants on the ISS

Tropisms in Plants

Backgrounders

Learn about the different ways that plants move in response to their environments.

Plant Cells with Visible Chloroplasts

Specialized Cells of the Leaf System

Backgrounders

Learn about the structure and function of the cells in leaves.

Seedling with sunlight

Light & Plants

Backgrounders

Learn about the process of photosynthesis and how it is affected by light levels.

Heating a liquid over a flame in a lab

Types of Chemical Reactions

Backgrounders

Learn about the four main types of chemical reactions.

Test tubes with colourful liquids

Evidence of Chemical Change

Backgrounders

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

Electroplating equipment

Chemical Reactions: Conditions & Speeds

Backgrounders

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

Solutioneers Episode 5 screen shot

The Solutioneers Week 5: Chemical Bonding

Interactives

This week's episodes and hands-on activity explore some cool chemistry!

Leaf and the Sun

Plant Functions

Backgrounders

Learn about the important plant functions of photosynthesis, respiration and transpiration

Platinum crystals

Catalytic Converters

STEM Explained

Learn about how catalytic converters make vehicle emissions less harmful.

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?

Browning apple

Why Do Apples Turn Brown After You Cut Them?

STEM Explained

Has your fresh juicy apple turned an unsightly brown? Learn about the redox reaction behind the transformation.