Secondary Catalogue

If movies have taught us anything, it's that the first person to enter a spooky cave is the first to get in trouble! Will First Mate Phil survive to see the light of day? This lesson will shine a light on the chemical properties of metals, non-metals and metalloids. Show Less

A poisoned umbrella and a forensic investigation…using an unusual and as-yet-unsolved true crime as a launching place, this video shows that the chemistry of matter matters. Elements, as represented on the periodic table, are made up of only one type of atom. Using mercury—and mercury poisoning—as an example, this video examines the chemical and structural qualities of elements and the anomalies that make mercury unusual. Complemented by clear graphics, it is essential viewing for students of chemistry. Show Less

Long Jane Silver and Senor Ortega analysed the soil sample and saved the cocoa trees! But something's not right... Did they perform the wrong steps? Was their sample contaminated? This lesson will assess the accuracy, reliability and validity of the gravimetric analysis experiment in the previous lesson. Show Less

This programme is about seawater. It is the most important liquid on Earth, not only from its sheer volume, but also because it has remarkable qualities. A few of them, like buoyancy, are common to all liquids - but seawater is also the cradle of life. Three key factors of water underpin life in the sea: water’s dissolving power, its tendency to keep a stable temperature, and its transparency to light. This programme explains the mechanisms and the outcomes of these key facts—and other things—that make seawater both weird and wonderful. Show Less

The chemical reactivity of metals increases from the top to the bottom in a group, while the chemical reactivity of non - metals decreases as we move down in the group. On moving down in a group of the Periodic Table, there is no change in the nature of the oxides of the elements. Show Less

How is chemical equilibrium important for making ammonia? This video demonstrates how an understanding of chemical equilibrium and Le Chatelier’s principle is applied in the Haber-Bosch Process, making the production of ammonia more efficient. Clear explanations of the theory behind the process make this essential viewing for senior secondary chemistry students. Show Less

What happens when you add more product to an equilibrium? This video demonstrates how an increase in products affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the appearance of a solution of sodium chloride changes when products are added. Footage of a real lab demonstration makes this essential viewing for senior secondary chemistry students. Show Less

What is an equilibrium constant and how do we work it out? This video explains various aspects of the equilibrium constant, including what it is, how to calculate it and how it can be affected by other factors like temperature and pressure. Easy-to-understand explanations and worked-through examples of Kc calculations make this essential viewing for senior secondary chemistry students. Show Less

How is chemical equilibrium important for cellular respiration? This video explains how two competing equilibrium reactions involving haemoglobin are at work in the process of cellular respiration. Clear explanations of this life-or-death example of competing equilibria make this essential viewing for senior secondary chemistry students. Show Less

What happens when you increase the pressure on an equilibrium? This video demonstrates how changing pressure affects reaction rates in accordance with Le Chatelier’s principle. Students will observe the colour of a gaseous mixture of nitrogen dioxide and dinitrogen tetroxide under different pressure conditions. Footage of a real lab demonstration makes this essential viewing for senior secondary chemistry students. Show Less

What happens when you turn up the heat in an equilibrium? This video demonstrates how changing temperature affects reaction rates in accordance with Le Chatelier’s principle. Students will observe the colour of a solution of cobaltous chloride at different temperatures. Footage of a real lab demonstration makes this essential viewing for senior secondary chemistry students. Show Less

What happens when you remove products from an equilibrium? This video demonstrates how a decrease in the amount of product affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the appearance of a solution of zinc hydroxide changes when hydrochloric acid are added. Footage of a real lab demonstration makes this essential viewing for senior secondary chemistry students. Show Less

What does Le Chatelier have to do with chemical equilibrium? This shows how various changes can affect the balance of a reaction in equilibrium and favour one reaction over another, as predicted by Le Chatelier’s principle. Easy-to-understand explanations and clear examples make this essential viewing for senior secondary chemistry students. Show Less

What happens when you add more reactant to an equilibrium? This video demonstrates how an increase in reactants affects reaction rates in accordance with Le Chatelier’s principle. Students will observe how the colour of a solution of ferric thiocyanate changes when reactants are added. Footage of a real lab demonstration makes this essential viewing for senior secondary chemistry students. Show Less

What does it mean if a reaction is in equilibrium? This video introduces key concepts such as reversible and irreversible reactions, forward and reverse reactions and equilibrium. Easy-to-understand explanations and examples of chemical equilibria in daily life make this essential viewing for senior secondary chemistry students. Show Less

Watch Cookie struggle after a late night out on the seven seas. They should be awake after eating 80% dark chocolate and drinking a strong (10 000%) coffee! This lesson will introduce gravimetric analysis before delving into the equation for percentage composition. Show Less

Long Jane Silver landed a sweet cocoa deal with a local farmer, Senor Ortega. But when a supply ship barely survives a storm, the pirates and Ortega join forces to save the cocoa farm! This lesson will unearth the steps in gravimetric analysis, in the context of a simple experiment. Show Less

Using significant figures is as easy as watching Netflix! This lesson will bring back the basics: counting and rounding significant figures. To finish, we'll explore how significant figures are related to accuracy and how to approach calculations in exams. Show Less