A Level Chemistry A OCR
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92 topics in 13 modules
☑️ Development of Practical Skills 5 topics
- Planning Experiments
- Practical Techniques
- Presenting Results
- Analysing Results
- Evaluating Experiments
☑️ Atoms and Reactions 13 topics
- The Atom
- Atomic Models
- Relative Mass
- The Mole
- Empirical and Molecular Formulae
- Equations and Calculations
- Formulae of Ionic Compounds
- Acids and Bases
- Titrations
- Atom Economy
- Percentage Yield
- Oxidation Numbers
- Redox Reactions
☑️ Electrons, Bonding and Structure 5 topics
- Electronic Structure
- Ionic Bonding
- Covalent Bonding
- Shapes of Molecules
- Polarity and Intermolecular Forces
☑️ The Periodic Table 7 topics
- The Periodic Table
- Ionisation Energies
- Structure, Bonding and Properties
- Group 2
- Group 7
- Disproportionation and Water Treatment
- Tests for Ions
☑️ Physical Chemistry 5 topics
- Rates of Reactions
- Enthalpy Changes and Calculations
- Catalysts
- Dynamic Equilibrium
- The Equilibrium Constant
☑️ Basic Concepts and Hydrocarbons 5 topics
- Organic Chemistry - The Basics
- Alkanes
- Alkenes
- Stereoisomerism
- Polymers
☑️ Alcohols, Haloalkanes and Analysis 5 topics
- Alcohols
- Haloalkanes
- The Greenhouse Effect & Global Warming
- Analytical Techniques
- Organic Synthesis
☑️ Rates, Equilibrium and pH 12 topics
- Rates of Reactions
- Reaction Orders
- The Rate Constant
- The Rate-Determining Step
- The Arrhenius Equation
- The Equilibrium Constant
- Equilibrium Concentrations
- Gas Equilibria
- Acids and Bases
- pH
- The Acid Dissociation Constant
- Buffers
☑️ Energy 11 topics
- Lattice Enthalpy
- Born-Haber Cycles
- Enthalpies of Solution
- Entropy
- Free Energy
- Redox Equations
- Redox Titrations
- Iodine-Thiosulfate Titrations
- Electrochemical Cells
- The Electrochemical Series
- Storage and Fuel Cells
☑️ Transition Elements 5 topics
- The d-block
- Properties of Transition Elements
- Ligands and Complex Ions
- Substitution Reactions
- Reactions of Ions
☑️ Aromatic Compounds and Carbonyls 8 topics
- Benzene
- Aromatic Compounds
- Electrophilic Substitution
- Substituted Benzene Rings
- Aldehydes and Ketones
- Carboxylic Acids
- Acyl Chlorides
- Esters
☑️ Nitrogen, Compounds, Polymers and Synthesis 7 topics
- Amines and Amides
- Chirality
- Polymers
- Carbon-Carbon Bond Synthesis
- Organic Synthesis - Practical Techniques
- Functional Groups
- Synthetic Routes
☑️ Analysis 4 topics
- Tests for Organic Functional Groups
- Chromatography
- NMR Spectroscopy
- Proton NMR
A Level Chemistry A OCR Revision Content
Take a look at the written content available for this course. Practice-question availability may vary.
A Level Chemistry A OCR - Development of Practical Skills - Planning Experiments Content Preview
Development of Practical Skills
Planning Experiments
Practical Skills: Planning Experiments
Understand the Objective
- Grasp the purpose or aim of the experiment.
- Identify the problem or question the experiment intends to address.
- Make sure you comprehend any theories or concepts related to the experiment.
Formulating a Hypothesis
- Predict the likely outcome of the experiment based on existing knowledge or theory.
- Formulate a testable hypothesis that can be confirmed or refuted by the experiment.
Experimental Design
- Identify the variables in the experiment: independent, dependent, and controlled.
- Plan how you'll manage these variables to ensure a fair and controlled experiment.
- Outline the steps of the experiment, known as the experimental procedure.
- Consider repeating measurements to increase reliability and reduce anomalies.
Selection of Equipment and Materials
- Choose suitable lab equipment and chemicals needed for the experiment.
- Make sure you understand the function and proper usage of each equipment piece.
- Ensure the available materials are appropriate for the experiment's aim and scale.
Safety Consideration
- Evaluate any potential risks or hazards associated with the experiment.
- Determine the necessary safety precautions to minimise these risks.
- Plan how to respond to any possible emergencies during the experiment.
Data Collection Plan
- Decide how you will record and organise your data, including units of measurement.
- Plan for any necessary calculations or data conversions.
- Ensure the data collection method suits the hypothesis and experiment design.
Analysis and Interpretation
- Think about how you will analyse and interpret the data from your experiment.
- Plan how to represent your results graphically if necessary.
- Ponder the potential impact of errors, anomalies or uncertainties on your results.
Evaluation and Conclusion
- Design a method for evaluating the success of your experiment.
- Contemplate the criteria you'll use to draw conclusions from your results.
Question: Define the roles of independent, dependent and controlled variables in the design of a chemistry experiment.
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