Many chemical reactions don't just go one way, they go forwards and backwards. Once there is balance between the two, this is an equilibrium. And we need to be able to predict how much stuff there will be at equilibrium! Get ready to...

Upon viewing the Investigating Chemical Reactions video series, students will be able to do the following: Define a chemical reaction as a process in which substances undergo changes to produce new materials with different...

An acid is a substance that will dissociate in water to give a proton (or H+ ion) and a conjugate base. An acid is considered to be strong if dissociation nears 100%, and weak if dissociation is usually less than 1%. In this lesson, we...

When a substance changes its state, heat energy is involved. This energy is used not to heat up the substance, but to separate the molecules from each other. This is known as specific latent heat. Specific latent heat is defined as the...

In the first part of this video we looked at diffusion to move gases and osmosis for the movement of water, from high concentration to low concentration down their concentration gradient. Active transport works in the opposite...

Antibiotics… one of the greatest discoveries of the 20th century. You’ve probably taken them at some point during your life… maybe for a throat or ear infection? About 20 doses of antibiotics are prescribed per 1,000 people every day...

Penicillin is a type of antibiotic that can be used to treat bacterial infections. Really important - antibiotics can only be used to treat bacterial infections. Penicillin was first discovered in 1928 by a scientist called Alexander...

This series of videos takes students on a fascinating journey, following food as it travels through the digestive system. Clear animations illustrate the functions of the major digestive and excretory structures. Concepts and terminology...

We can use coffee cups to do simple experiments to figure out how quickly different materials heat up and cool down. Take a look!

Upon viewing the The Changing Phases of Matter video series, students will be able to do the following: Explain that phases of matter, also called states of matter, are the physical forms matter can take. State the four phases of...

What are the differences between solids, liquids, and gases? In this program students will investigate real-life examples of the various phases of matter. Colorful animations illustrate how these states differ in the movement of...

This live-action video program is about the term phases of matter. The program is designed to reinforce and support a student's comprehension and retention of the term phases of matter through use of video footage, photographs, diagrams...

Safety in science always comes first. This program demonstrates safe practices in science when conducting even the simplest of activities. Emphasis is placed on avoiding accidents to eyes, skin, clothing, and equipment. Safe practices in...

What's the difference between a physical change and a chemical change? What are elements, compounds, pure substances, and mixtures? So many definitions to learn! Don't worry, Professor Dave will take you through the details.

All living organisms are made up of cells - they are the basic building blocks of life. There are two important categories of cells: plant cells and animal cells. In this video we look at animal cells in more detail. Animal cells are the...

In many surveys, the vast majority of teenagers report that when they do something their parents wouldn't approve of, they're just pursuing their freedom. This program begins the discussion of addiction and dependency from the...

In the 50 years since this golden era, scientific progress in psychedelic research has been limited. A backlash against the hippy counterculture - "the war on drugs" - halted research into psychedelics. In 1971, the UK parliament...

In this video, we explore the concept of chemical compounds and how they are formed through chemical bonding. We learn that chemical compounds are made up of two or more elements that are chemically combined together. The video also...

We've established that the basic unit of life is the cell, and that the simplest forms of life are just one cell. The earliest unicellular organisms were prokaryotic, and there are many prokaryotic organisms still around today, including...

Upon viewing the Solutions at Work video series, students will be able to do the following: Explain that a solution is a type of mixture made of two or more substances that are evenly distributed. Provide an example of a common solution....

Upon viewing the Weathering and Erosion video series, students will be able to do the following: Describe weathering as a process that involves the breaking down of rocks and other materials on Earth's surface. Differentiate between the...

The rock cycle is illustrated in detail using easy-to-understand animations. Examples of the various types of rocks are introduced and the characteristics of different rocks are compared. Other terminology includes: rock cycle, igneous,...

This program makes the Modern Periodic Table come alive to students. Numerous real-life examples of elements are exemplified in the table. Animations and graphics illustrate concepts not easily achieved through other instructional...

In this wonderful introduction to the nature of matter, students will explore how they depend on and interact with matter. The program clearly demonstrates some of the physical and chemical properties of matter. Special attention is paid...