In this lesson we will explain the process of DNA profiling, including the principles of electrophoresis and variables which influence sample movement.
In this lesson we will define elements and compounds and identify them from diagrams, name compounds from word equations and formulae, and identify reactants and products in equations.
In this lesson we will describe atoms using the nuclear model, including the charges and mass of the three subatomic particles. We will use the periodic table to calculate the number of protons, neutrons and electrons for any given element.
In this lesson we will describe the development of the atomic model, comparing the nuclear model with the plum pudding model and explaining how new evidence from the gold foil experiment led to a change in the atomic model.
In this lesson we will Identify variables to change, measure and control to investigate diffusion work safely in order to collect and record data to test the hypothesis. We will process the data to calculate a mean, accounting for anomalies, displaying data appropriately, including a table for results with units.