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OCR A level Physics: Radioactivity
OCR A level Physics: Chapter 25 Radioactivity is apart of the Module 6: Particle and Medical Physics
All presentations come with worked examples, solutions and homeworks.
25.1 Radioactivity
25.2 Nuclear decay equations
25.3 Half-life and Activity
25.4 Radioactive Decay Calculations
25.5 Modelling Radioactive Decay
25.6 Radioactive Dating
Types of ionising radiation (alpha, beta-plus/beta-minus, gamma)
Penetration power and ionising power
Detecting radiation with a Geiger (GM tube) counter
Background radiation and correct count rates
Electric and magnetic fields affect ionising radiation
Cloud chambers
Typical speeds of radiation produced form nuclear decays
Conservation rules for nuclear decays
Nuclear notation
Alpha decays
Beta-minus and beat-plus decays
Gamma decays
Decay chains
The reason why radioactive decays are considered random and spontaneous
Rolling dice being a good analogue for radioactive decays
Definition of half-life
Determining half-life from a graph.
Calculating half-life from a table of data.
Activity of a sample in Bq
The decay constant derivation
Decay constant and half-life
Using exponentials to calculate activity and number of nuclei present
Solving Differential Equations (beyond A-level Physics course)
Iterative Method
Selecting appropriate time intervals
Comparing answers from the iterative method and exact solution.
State what isotopes of carbon are used in carbon dating.
Explain how carbon dating works.
Calculate the age of objects with carbon dating.
Bundle
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OCR A Level Chemistry: Module 6 Organic Chemistry and Analysis
This bundle includes all PowerPoint lessons for Module 6 Organic Chemistry and Analysis.
All PowerPoints are whole lessons included with student activities, animated answers, homework questions with answers provided.
C25 Aromatic Chemistry
Introducing Benzene
Electrophilic substitution Reactions
The Chemistry of Phenol
Directing Groups
C26 Carbonyls and Carboxylic Acids
Carbonyl Compounds
Identifying Aldehydes and ketones
Carboxylic acids
Carboxylic acid derivatives
C27 Amines, Amino Acids and Polymers
Amines
Amino acids, amides and chirality
Condensation Polymers
C28 Organic Synthesis
Carbon-carbon bond formation
Further Practical Techniques
Further Synthetic Routes
C29 Chromatography and Spectroscopy
Chromatography and functional group analysis
Nuclear Magnetic Resonance Spectroscopy
Carbon-13 NMR Spectroscopy
Proton NMR Spectroscopy
Interpreting NMR Spectra
Combining Techniques
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OCR AS level Physics: Resistance
OCR AS Physics A: Resistance is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.
Definition of an ohm.
Temperature and resistance for metallic conductors (wires)
The ohm in base SI units
I against V graphs and resistance
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OCR AS Physics: Electromagnetic Waves
OCR AS Physics A: Electromagnetic Waves is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.
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GCSE Physics: Simple Circuits
This presentation covers OCR Gateway Physics 9-1 P3.2.1 Simple Circuits.
Circuit Symbols
Electric field lines and potential difference
Modeling Circuits with Rope
Measuring Potential Difference
Energy Transferred Equation for Electricity
Rearranging Equations
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OCR AS Physics: Total Internal Reflection
OCR AS Physics A: Total Internal Reflection is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.
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GCSE Physics: Resistance and Ohm's Law
This presentations covers the OCR Gateway Physics 9-1 P3.2.3 Resistance
Combining resistors in series
Combining resistors in parallel
Modeling resistance, current, and potential difference with a rope.
The relationship between potential difference and current
The relationship between resistance and current
Ohm’s law
Rearranging equations
Worked examples and student questions
Explaining how increasing current increases resistance in a metal conductor and filament lamp.
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GCSE Physics: LDRs and Thermistors
This presentation covers OCR Gateway Physics 9-1 P3.2.5 LDR and Thermistors.
Circuit Symbols
Uses of LDRs and Thermistors
Plotting data and characteristic curves
Conductors, insulators, and semiconductors
Experiment into resistance and temperature of a thermistors
Investigation into resistance and light level of a LDR
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GCSE Physics: Current and Forces with Equation
This presentation covers OCR Gateway Physics 9-1 P4.2.1 b Current and Forces.
Units for Magnetic Field Strength
Converting from mT to T
Magnetic Force Equation
Rearranging Equations
Increasing the force on a current carrying conductor in an external magnetic field.
Student questions and worked answers
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GCSE Physics: Free Body Diagrams
This presentation covers GCSE Physics OCR Gateway P2.2.2
Vector Addition 1D
Vector Addition 2D - scaled drawings
Vector Addition 2D - finding angles with a protractor
Resultant vectors and acceleration
Student problems with answers.
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GCSE Physics: Stretching Springs
These two lesson presentations covers the OCR Gateway Physics 9-1 P2.3.1 material.
• Number of forces needed to deform an object
• Elastic and Plastic definitions
• Hooke’s Law
• Rearranging equations
• Determining the gradient
• Determining the spring constant
• Experimental procedure
• Exam style questions with solutions
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GCSE Physics: Moments and Turning Forces
This presentation covers OCR Gateway Physics 9-1 P2.3.4 Turning Forces
Clockwise and anti-clockwise moments
Equation for moments
Rearranging equation
Balancing moments
Principle of moments
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GCSE Physics: The Acceleration Equation
This PowerPoint presentation with worked examples and student questions covers:
• Acceleration equation with units
• Speed-time graphs
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GCSE Physics: Electrical Resistance
This PowerPoint presentation with worked examples and student questions covers:
• Ohm’s law and units
• Proportionalities
• Resistance in series
• Rearranging equations
• Calculating resistance with ohm’s law
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GCSE Physics: Potential Difference
This PowerPoint presentation with worked examples and student questions covers:
• Modelling potential difference and current
• Circuit symbols and units
• Measuring potential difference
• Series and Parallel circuits
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OCR AS level Physics: Moving Charges
OCR AS level Physics: Moving Charges is a part of the Module 4: Electrons, Waves, and Photons.
Presentation come with worked examples, solutions and homeworks.
Structure of a metal
Conventional current and electron flow
Measuring current with an ammeter
Ionic solutions with cations and anions.
Ions, relative charge and absolute charge
Comparing ionic solutions and metal conductors
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GCSE Physics: The Solar System
This presentation covers OCR Gateway Physics 9-1 P8.3.2 Our Solar System
This PowerPoint is a whole lessons included with student activities and animated answers.
Structure of the solar system
Nuclear Fusion
Evolution of large stars
Evolution of Sun like stars
Gravitational force and force from nuclear fusion
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OCR AS level Physics: Equations of Motion
OCR AS level Physics: Equations of Motion is a part of the Module 3: Forces and Motion
Presentation come with worked examples, solutions and homeworks.
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OCR AS level Physics: Free body diagrams
OCR AS level Physics: Free-body diagrams is a part of the Module 3: Forces and Motion
Presentation come with worked examples, solutions and homeworks.
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OCR AS level Physics: Elastic Potential Energy
OCR AS level Physics: Elastic Potential Energy is a part of the Module 3: Materials
Presentation come with worked examples, solutions and homeworks.