AQA GCSE Chemistry
Below you'll see GCSE Chemistry paper 1 video lessons – free to watch. Use them to catch up, revise or learn content.
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Watch the video to see the full planning, revision and practice system which includes full paper 2 resources.
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Atomic structure and the periodic table
1. Atoms, Elements and Compounds
This lesson goes through the meaning of the words atom, element and compound and gives some examples of these, including the meaning of the small numbers in formula equations
2. Balancing Equations
A very important skill that comes up across the whole subject. Here we go through how to balance equations. There are some practise equations at the end of the video
3. Mixtures
This lesson describes techniques to show that mixtures can be separated by physical processes such as filtration, crystallisation, simple distillation
4. Development of the Atom Model
The video explains the idea that new experimental evidence may lead to a scientific model being changed or replaced. This is a very good example of how a scientific model has developed and changed over time.
5. Atomic Structure
This video goes through the structure of the atom and key information that is very important for a whole range of different aspects of the specification.
6. Electronic Structures
This video goes through the way atoms can be represented by numbers or with a diagram. You should be able to show both.
7. Isotopes and Relative Atomic Masses
This lesson helps you describe the differences between the isotopes of an element and some maths in terms of calculating relative atomic masses
8. The Development of the Periodic Table
This video goes though the key developments in the periodic table over time and describes the important work done by Mendeleev to produce the modern periodic table.
9. The Periodic Table
This video helps you to understand how the periodic table is arranged based on patterns of reactivity and electronic structure and gives the properties of metals and non-metals.
10. Group 0 The Noble Gases
This video goes through the key properties of group 0 in the periodic table.
11. Group 1 The Alkali Metals
In this lesson we look at the physical and chemical (how they react) properties of the elements in group 1, called the alkali metals
12. Group 7 The Halogens
This video goes through the properties of group 7 , the halogens and the properties of these elements as you go down the group.
13. The Transition Elements (Chemistry Only)
This lesson goes through the general properties of the transition metals - did you know that there is one metal that is not solid at room temperature? Do you know which one?
Bonding, structure, and the properties of matter
14. Chemical Bonds
This lesson gives a summary of the type of chemical bonds that you need to know about for your GCSE chemistry. It goes through the properties of ionic, covalent and metallic bonding.
15. Ionic Bonding
In this video look at the details of how ionic bonding happens between metal and non-metal ions
16. Ionic Compounds and Limitations of Models
Here we go through the limitations of using models (2D and 3D diagrams and models) to describe ionic compounds and we look at a simple way to work out the empirical formula
17. Properties of Ionic Compounds
In this video, we explain the properties of ionic compounds. You should be able to give properties such as high melting points and explain why they have high melting points. Remember it is the compound that has the high melting point not the ions themselves. Good luck!
18. Covalent Bonding
This video explains how covalent bonds are made between non-metal and other non-metal atoms. Electrons are shared not transferred and remember, any time the word molecule is used, there will be covalent bonds involved.
19. Giant Covalent Structures
This video goes through the three giant covalent structures you need to know about.
20. Properties of Substances made of Small Molecules
Here we go through the properties of substances that are made of small molecules (remember the substances may be compounds or elements). Be careful to get the terminology correct.
21. Metallic Bonding
In this lesson we go through the bonding between the atoms/ions in metals and explain how delocalised electrons help make this strong bond.
22. Conduction in Metals and Alloys
This video goes through the reasons why metals are good conductors of heat and electricity and why alloys are often harder than pure metals which can often be soft and much more easily bent into shape.
23. Polymers
Relatively short video to describe the structure of polymers.
24. Graphene and the Fullerenes
Here, we go through the structure of a substance called graphene - a single layer of graphite atoms and a group of molecules called the fullerenes, including buckyballs and nanotubes
25. The Particle Model and State Symbols
Here we go through particle arrangement and behaviour for changes from solid to liquid to gas. We also look at the limitations of the model we use to explain changes of state. You might see Freddie in this video 🙂
26. States of Matter
This video goes through the meaning of melting and boiling and looks at the change in temperature of a substance which melts then boils. We also have a go at predicting state given some data for the halogens
27. The Sizes and Properties of Particles (Chemistry Only)
In this lesson we go thought the idea of nanoparticles and compare them to the sizes of other particles. We also look at possible uses of nanoparticles, use a bit of standard form and look at the possible worries we have with the use of nanoparticles in products.
Quantitative Chemistry
28. Relative Formula Mass and Conservation of Mass
Here we look at how to calculate the relative formula mass of elements and compounds, and look at the conservation of mass in reactions, i.e., how mass is not gained or lost, even though it might seem like it, in chemical reactions
29. Moles (Higher)
This video defines what we mean by a mole and goes through some of the calculations you need to be able to do using moles.
30. Using Moles to Balance Equations (Higher)
Balancing equations can be done by looking at the number of atoms on each side of a chemical reaction. But in this video we learn how to doing by calculating the number of moles.
31. The Amount of Substances in Equations (Higher)
Sometimes called reacting masses, this video helps you to calculate the mass of reactant or product in a chemical reaction by using a balanced formula equation
32. Limiting Reactants (Higher)
This higher tier video is all about the effect of limiting one of the reactants in a chemical reaction. There are all some calculations explained that help work out the limiting factors.
33. Concentrations of Solutions (Higher Content)
This video explains the calculations needed to work out the concentrations of solutions in mass per given volume.
34. Percentage Yields (Higher Content)
This video is all about calculating the percentage yield and for the higher tier, calculating the mass of products from a given mass of reactant (Freddie makes a little appearance)
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35. Atom Economy
Slightly longer video than usual but covers some essential skills as well as explaining how to calculate atom economy
36. Using Concentrations of Solutions (Chemistry Only, Higher)
This is an explanation of how we can calculate unknown concentrations when two solutions react
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37. Using Amounts and Volumes of Gases (Chemistry Only and Higher)
This lesson looks at the equations used to measure molar volumes of gases from a balanced equation.
Chemical Changes
38. Metal Oxides
A short video that goes through some basic reaction of metals, looking specifically at the reaction of metals
39. The Reactivity Series
Here we look at the reactivity series of metals and includes video of metals reacting in water. A summary at the end shows the reaction of metals in air, water and dilute acid.
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40. The Extraction of Metals and Reduction
This lesson goes through the overall extraction process for metals
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41. Oxidation and Reduction in Terms of Electrons (Higher)
Here we look at oxidation and reduction in terms of electrons and displacement reactions
42. Reactions of Acids with Metals (Higher)
This is a detailed look a the reaction of acids and metals for the higher tier.
43. Neutralisation of Acids and Salt Production
Here we look at some common acids you need to know and alkalis and the types of salts made when they react.
44. Soluble Salts
Here we look at how to make a sample that is dry of a soluble salt and we talk about the experimental procedure.
45. The pH Scale and Neutralisation
Here we look at what the pH scale is and the process of neutralisation. There is also the ion equation for neutralisation.
46. Titration (Chemistry Only)
Here we describe how to carry out titrations using strong acids and strong alkalis (sulfuric, hydrochloric and nitric acids only) to find the reacting volumes accurately.
47. Strong and Weak Acids (Higher)
In this lesson we look at the meaning of neutrality and relative acidity in terms of the effect on hydrogen ion concentration and the numerical value of pH. For the higher tier you should be able to explain the difference between a strong and weak acid.
48. Process of Electrolysis (Higher)
Here we look at how electrolysis works and for the higher tier, how to write and balance half equations. More half equation practise in other videos too!
49. Using Electrolysis to Extract Metals
The process of electrolysis leads to metals being extracted from their compounds. This lesson looks at the different methods of using electrolysis to extract metals.
50. Electrolysis of Aqueous Solutions
Here we take a look at the specific elements made at the anode and cathode when we carry out electrolysis of substances dissolved in water.
51. Half Equations at Electrodes (Higher)
Some higher tier content for electrolysis and the use of half equations to show what happens at the electrodes. Do a couple of these and it gets easier!
Energy Changes
52. Exothermic and Endothermic Reactions
This video looks at the difference between endothermic and exothermic reactions.
53. Reaction Profiles
Here we look at graphs called reaction profiles that help us to describe what energy changes there are when endothermic and exothermic chemical reactions happen.
54. The Energy Change of Reactions (Higher)
Here we look at the calculation we need to be able to do in order to work out whether a reaction is endothermic or exothermic - all for the higher tier.
55. Cells and Batteries
This describes how a simple electrical cell is made and the differences between different kinds of cell.
56. Fuel Cells
Here we look at how fuel cells work and for the higher tier, the half equations at the electrons of fuel cells.