Archives: Lessons

Physical and Chemical Changes Learning Objective In this lesson we will compare physical and chemical changes, and learn how to differentiate between them. Learning Outcomes By the end of this lesson you will be able to: Differentiate between a physical change and a chemical change. Give examples of different types of physical change. Identify signs … Read more

Introduction to the Periodic Table Learning Objective In this lesson we will learn how elements are arranged in the periodic table, according to trends in their properties. Learning Outcomes By the end of this lesson you will be able to: Describe the general layout of the periodic table. Identify groups and periods on the periodic … Read more

Names and Symbols for Elements and Compounds Learning Objective In this lesson we will learn how to write and interpret chemical formulas for elements and compounds. Learning Outcomes By the end of this lesson you will be able to: Write chemical symbols for elements. Write chemical formulas for compounds. Identify the number of each type … Read more

Elements, Compounds and Mixtures Learning Objective In this lesson we will learn how matter can be categorised based on the subunits making it up, and how this affects the separability of substances. Learning Outcomes By the end of this lesson you will be able to: Describe atoms and molecules. Compare pure substances and mixtures. Compare … Read more

Density of Solids, Liquids and Gases Learning Objective In this lesson we will look more closely at density as a physical property, including what happens when substances with different densities are combined. Learning Outcomes By the end of this lesson you will be able to: Describe density. Express density as a mathematical relationship between mass … Read more

Expansion and Contraction in Solids, Liquids and Gases Learning Objective In this lesson we will learn how temperature changes affect the volume of solids, liquids and gases. Learning Outcomes By the end of this lesson you will be able to: Describe the relationship between heat energy, movement of particles and the volume of a substance. … Read more

Changes in States of Matter Learning Objective In this lesson we will learn about the six types of changes in state of matter, and the energy changes that are associated with them. Learning Outcomes By the end of this lesson you will be able to: Name and describe the six changes of state. Use the … Read more

Particles in Solids, Liquids and Gases Learning Objective In this lesson we will learn how the energy, arrangement and movement of particles in solids, liquids and gases determines their different properties. Learning Outcomes By the end of this lesson you will be able to: Describe the particle model of matter. Describe the energy, arrangement and … Read more

Properties of Solids, Liquids and Gases Learning Objective In this lesson we will learn about the three main states of matter and the properties that characterise them. Learning Outcomes By the end of this lesson you will be able to: Describe properties of solids, liquids and gases. Describe the different states of water.   (Image: … Read more

Respiration and Photosynthesis Learning Objective In this lesson we will learn about two of the most important chemical processes in living things – cellular respiration and photosynthesis. Learning Outcomes By the end of this lesson you will be able to: Write chemical equations for respiration and photosynthesis. Describe the role of respiration and photosynthesis in … Read more

Combustion and Corrosion Learning Objective In this lesson we will learn about different oxidation reactions, including combustion and corrosion. Learning Outcomes By the end of this lesson you will be able to: Describe combustion, including some of its uses in society. Describe corrosion, including ways it can be prevented. Compare the chemical processes of combustion … Read more

Acid-Metal Reactions Learning Objective In this lesson we will learn about chemical reactions between acids and metals. Learning Outcomes By the end of this lesson you will be able to: Predict whether a chemical reaction between an acid and a metal will take place or not. Determine the products of chemical reactions between acids and … Read more

Acid-Base Reactions Learning Objective In this lesson we will learn about the different types of acid-base reactions and the products they form. Learning Outcomes By the end of this lesson you will be able to: Identify acid-base reactions. Write the generalised chemical equations for different types of acid-base reactions. Determine the products of acid-base reactions. … Read more

Acids, Bases and pH Learning Objective In this lesson we will compare acids, bases and neutral solutions. We will also discuss how acidity is measured and how it can be adjusted. Learning Outcomes By the end of this lesson you will be able to: Define acids, bases and neutral solutions, in terms of hydrogen ions … Read more

Writing Balanced Chemical Equations Learning Objective In this lesson we will learn how to write chemical equations in a way that reflects the Law of Conservation of Mass. Learning Outcomes By the end of this lesson you will be able to: Define the Law of Conservation of Mass. Explain how the Law of Conservation of … Read more

Determining the Formula for Ionic Compounds Learning Objective In this lesson we will learn how ionic formulas reflect the ratio of positive and negative ions in ionic compounds. Learning Outcomes By the end of this lesson you will be able to: Write the formula for ionic compounds containing only monatomic ions. Write the formula for … Read more

Naming Ions and Ionic Compounds Learning Objective In this lesson we will learn how ions and ionic compounds are named. Learning Outcomes By the end of this lesson you will be able to: Name positive and negative monatomic ions. Give examples of metals that form more than one type of ion, and show how these … Read more

Formation of Ions and Ionic Compounds Learning Objective In this lesson we will learn how atoms can gain or lose electrons to form ions, and subsequently, ionic compounds. Learning Outcomes By the end of this lesson you will be able to: Describe the most stable type of electron configuration. Describe how metals lose electrons to … Read more

Radioactivity Learning Objective In this lesson we will learn how unstable isotopes can undergo different types of nuclear decay. Learning Outcomes By the end of this lesson you will be able to: Describe alpha, beta and gamma decay. Predict the products of different types of nuclear decay. Define half life and calculate how much of … Read more

Electron Configuration (Elements 1-20) Learning Objective In this lesson we will learn how electrons are arranged around the nuclei of atoms. Learning Outcomes By the end of this lesson you will be able to: Describe how electrons are arranged into electron shells, and explain how these shells are filled. Describe how electron shells are labelled, … Read more