Electron configuration
This lesson looks at how to calculate the number of subatomic particles in an atom and how to draw and write the electron configuration for atoms.
Unit Overview: Reactivity
Lessons:
20 lessons
Ions
This lesson looks at why atoms react and how this can lead to the formation of ions. We also look at an example reaction in which ions are involved in a chemical bond.
Chemical formulae
This lesson explains how to write and interpret chemical formula and how to calculate relative formula mass.
Symbol equations
This lesson recaps the law of conservation of mass and will teach you how to balance symbol equations.
Acids and metals
This lesson looks at the observations made when a chemical reaction takes place, before focussing specifically on the reactions between metals and acids. This lesson also contains a practical, providing the opportunity for you to complete one of these reactions yourself.
Acids and metal oxides
This lesson looks at what a metal oxide is, their reactions with acids and then compares these reactions to those between metals and acids.
Making a salt
This lesson looks at what a salt is and how they can be made, including details about filtration and crystallisation.
Acids and metal carbonates
This lesson looks at what a metal carbonate is, their reactions with acids and how we can test for the presence of carbon dioxide gas.
Neutralisation
This lesson recaps the differences between acids and alkalis, explains what a neutralisation reaction is and looks at a method used for performing neutralisation accurately.
Method writing
This lesson investigates potential chemical combinations that could be used to make a particular salt, looks at how to write the perfect method and then applies this knowledge to the practical "making a salt".
Hazard and risk
This lesson explains the difference between a hazard, a risk and a control. It also looks at how to write a risk assessment before practicing this skill.
Reactivity series
This lesson looks at what the term vigorous reaction means, what the reactivity series is and how we can use the reactivity series to make predictions about reactions.
Metal ores
This lesson looks at what metal ores are, why only some metals are found in ores and how to extract some metals from their ores using carbon.
Displacement
This lesson recaps the reactivity series, looks at what a displacement reaction is and explains how to write word and symbol equations for displacement reactions.
Alloys
This lesson looks at the properties of metals, explains what an alloy is and why they can be more useful than pure metals.
Producing a voltage (Part 1)
This lesson looks at how to write a hypothesis and what the different variables are for an investigation. We then apply this knowledge to a practical that investigates how we can produce a voltage.
Producing a voltage (Part 2)
This lesson looks at how to draw a results table and write a scientific conclusion. We then apply this knowledge to a practical that investigates how we can produce a voltage.
Harry Brearley
This lesson looks at the story of Harry Brearley, how he made stainless steel and compares stainless steel to other alloys.
Review (Part 1)
This lesson recaps electron configuration, ions and the reactions of acids with metal, metal oxide, metal carbonate and alkali.
Review (Part 2)
This lesson recaps the reactivity series, metals, alloys and metal ores.
Units in Science
- Particles
- Cells, tissues and organs
- Energy
- Reproduction and variation
- Chemical reactions
- Forces and motion
- Ecological relationships and classification
- Light and space
- Atoms and the periodic table
- Digestion and nutrition
- Electricity and magnetism
- Materials and the Earth
- Plants and photosynthesis
- Matter
- Forces in action
- Reactivity
- Energetics and rates
- Sound waves
- Biological systems and processes