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Strand C: The Nature of Matter

Rolls of aluminum

Chemistry in the Aluminum Industry


Learn about the role of chemistry in the aluminum industry.

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.

Periodic Table with molecular model

Introduction to the Periodic Table of the Elements


Learn about the elements of the periodic table and how they are organized.

Cloud model of an atom

Introduction to the Atom


Learn about the parts of an atom and its history.

Colourful liquids and periodic table

Describing and Classifying Matter


Learn about the physical and chemical properties of matter.

Cube overflowing with spheres representing particles

Introduction to the Particle Theory of Matter


Learn about how the Particle Theory helps us understand matter.

Timothy Burkhart

Query a Career Profile


Students will explore career profiles and relate them to what they are learning in science class.

Casting hot iron

What Causes Hot Things to Glow?

STEM Explained

Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.

Nitrogen symbol from periodic table

Understanding the Nitrogen Cycle

STEM Explained

What is the nitrogen cycle? How do human activities such as using fertilizer affect the nitrogen cycle? How can this cause greenhouse gases?

Screen capture from the TED Ed video “The genius of Mendeleev's periodic table”

The Genius of Mendeleev's Table

STEM Explained

Dmitri Mendeleev’s version of the periodic table was brilliant - find out why!

Keplers Supernova. Image © NASA

The Life and Death of Stars

STEM Explained

The life and death of stars form the chemical elements that make up Earth, making stars critical to life as we know it.

The newest chemical elements

The Newest Elements on the Periodic Table

STEM Explained

The periodic table was last updated in 2016 with four new chemical elements. What is a chemical element? What is the atomic structure of the newest chemical elements? How did they get their names?

An image showing the symbol, atomic number and relative atomic mass of sodium. Sodium’s symbol is Na, its atomic number is 11 and its relative atomic mass is approximately 22.99.  Image ©

Na Na Na Na (Hey Hey Hey) Sodium!

STEM Explained

Sodium is a useful chemical element. You consume it as table salt regularly. Learn about salt mining, sodium uses, and what problems too much sodium can cause.