This series is for schools following OCR A double or separate award for GCSE science. The resources offer preparation for the OCR exams with teacher support to minimise the amount of time spent on administration and maximise the time available for teaching. In addition, the teacher's resources are available on CD-ROM in a fully customizable format to meet the needs of individual students.(3) 3 Magnesium fluoride contains ionic bonding. a Describe the changes that take place when magnesium and fluorine combine to form magnesium fluoride. ( 5) b What ... (1) c What is the formula of magnesium fluoride? (1) 4 This ... (1) c Draw a dot and cross diagram to show the bonding in methane. ... (1) c Explain why the number of sodium ions, Na+, is the same as the number of chloride ions, Cl~.
|Title||:||Chemistry for OCR A for Separate Award|
|Author||:||David Lees, John Payne|
|Publisher||:||Heinemann - 2001|