the new progress tracker
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The New Progress Tracker. - PowerPoint PPT PresentationTRANSCRIPT
The New Progress TrackerFor each section of the module you will be given a progress tracker booklet. This is designed to enable you to sign of when a section of the specification is complete or has been reviewed and to allow communication between you and your teachers about the best way to help you to progress.
F332 – Chemistry of Natural Resources
•This module is made up for three main topics▫Elements from the Sea▫The Atmosphere▫Polymer Revolution
•This is the biggest module this year, worth 50% of your AS level, therefore 25% of the full A-level
Dot-Cross DiagramsAnd Introducing Dative Bonding
ObjectivesBe able to...•Draw simple dot-cross diagrams for ionic
and covalent compounds•Describe and draw dative covalent bonds•Link the types of bonding to physical
properties of chemicals
Specification...Where this comes from...
Types of bonding an ionic bond
occurs between a metal and non-metal atom (e.g. NaCl)
a covalent bond occurs between two non-metal atoms (e.g. I2, CH4)
a metallic bond occurs between atoms in a metal (e.g. Cu)
There are three types of bond that can occur between atoms:
Representing ionic bonding
Covalent bonding
Task•Draw dot-cross diagrams for:
1. Lithium fluoride2. Calcium chloride3. Water4. Ethene5. Phosphorus pentachloride (beware this
does not obey the octet rule)
Lithium Fluoride
Calcium chloride
Water
Ethene
Phosphorus Pentachloride
Co-ordinate bonding
Examples of co-ordinate bonds
Task•Explain what a dative covalent bond is
and how it is formed. Give examples of molecular ions containing dative covalent bonds.
•Draw dot-cross diagrams for:▫Hydroxonium ion▫Ammonium chloride
Hydroxonium Ion
Ammonium Chloride
Bonding and Properties•How do the properties of chemicals differ
within different types of bonding?•Consider:
▫Melting and Boiling Points▫Solubility▫Thermal and electrical conductivity▫Hardness▫Any others you can think of...
•Discuss.
Bonding and PropertiesProperty Ionic Simple
MolecularGiant
CovalentMelting and
Boiling Points
Solubility
Thermal and electrical
conductivity
Hardness
Other points