Chapter 2 - Bonding, Structures And Nanoparticles Flashcards
What is ionic bonding
Ionic bonding occurs when electrons are passed from a metal to a non metal
What is covalent bonding
Covalent bonding occurs when atoms share a pair of electrons
What is metallic bonding
Metallic bonding is the attraction between positive ions in a regular lattice and the delocalised electrons
What are the physical features of a metallic structure
Metals physical features include being good conductors, having a high melting point and being malleable and ductile
What is an alloy
An alloy is a mixture of two or elements at least one of which is a metal, resulting in metallic properties
What are the physical features of a giant ionic lattice structure
The physical features of a giant ionic lattice structure include having a high melting and boiling point, being soluble in water and being good conductors of electricity when molten
What are the physical features of a molecular covalent structure
The physical features of a molecular covalent structure include having low melting and boiling points and not being able to conduct electricity
What is an allotrope
Allotropes are different forms of the same element, in the same state
What are the physical features of diamond
The physical features of diamond include high melting and boiling points, not being able to conduct electricity and being hard
What are the physical features of graphite
The physical features of graphite include having high melting and boiling points, being able to conduct electricity and being brittle
What are the physical features of graphene
The physical features of graphene include having high melting and boiling points, being good conductors of electricity and being very strong
What are nanonparticles
Nanoparticles are particles that are sized between 1-100 Nanometers
What can nanoparticles be used for
Nanoparticles can be used in sun cream because it gives better coverage, it is more effective in protection and it doesn’t degrade
What are the risks of nanoparticles
Nanoparticles can potentially damage the skin and have harmful effects on the environment
