Chemistry – C04 Redox Reactions and Electrolysis (Demo)
What’s on the Specification
| C5.1 | Know that on a basic level, oxidation is the gain of oxygen and that reduction is the removal of oxygen. |
| C5.2 | Know and be able to use the concept that oxidation and reduction are the transfer of electrons, i.e. reduction is the gain of electrons and oxidation is the loss of electrons. |
| C5.3 | Determine and use the oxidation states of atoms in simple inorganic compounds. |
| C5.4 | Identify any chemical equation that involves: oxidation only, reduction only, redox (both oxidation and reduction taking place), or no oxidation/reduction. |
| C5.5 | Understand the concept of disproportionation and recognise reactions (or species) where this occurs. |
| C5.6 | Understand the terms oxidising agent and reducing agent, and be able to identify them in reactions. |
| C12.1 | Understand the terms electrode, cathode (negative electrode), anode (positive electrode) and electrolyte. |
| C12.2 | Understand why direct current (dc), and not alternating current (ac), is used in electrolysis.
|
| C12.3 | Understand that in electrolysis at the cathode, the cations (positively charged ions) receive electrons(reduction) to change into atoms or molecules, and at the anode, the anions (negatively charged ions) lose electrons to form atoms or molecules (oxidation). |
| C12.4 | Understand and be able to predict the products of the electrolysis of the following:
|
| C12.5 | Be able to write half‑equations for the processes taking place at each electrode. |
| C12.6 | Explain how electrolysis is used to electroplate objects. |
Learning Objectives
- Interpret and construct statistical tables, charts, and diagrams for categorical, discrete, and time series data.
- Understand, construct, and interpret cumulative frequency graphs and histograms, including those with unequal class intervals using frequency density.
- Calculate exact measures of central tendency (mean, median, mode) and spread for ungrouped data, and calculate estimates for grouped data.
- Compare data sets using like-for-like summary values (such as the median and interquartile range), understanding their advantages and disadvantages.
- Analyse bivariate data using scatter graphs to draw estimated lines of best fit and perform interpolation or extrapolation.
- Recognise correlation, understanding the dangers of extrapolation and that correlation does not indicate causation.
Suggested Time
| Task | No. of Questions | Suggested Time |
|---|---|---|
| Examples | 11 | 20 min |
| Quiz | 8 | 20 min |
| Practice A | 20 | 40 min |
| Practice B | 16 | 60 min |
| Total | 60 | approx. 2-3hrs |
You don’t have access to this lesson
Please register or sign in to access the course content.
