End of topic test 2 year 10 - Structure and Bonding Flashcards
What is a chemical bond
Hold atoms together in a molecule after a reaction
ionic bonding is between what
a metal and a non metal
explain ionic bonding
Metal loses electrons and becomes a positive ion. Non metal gains the electrons and becomes a negative ion
Name 2 properties of giant ionic structures
High melting and boiling points
Conduct electricity when melted or dissolved in water
metallic bonding is between what
Metal and Metal
what is metallic bonding
When giant structures with free electrons move throughout
what are conductors
Metals conduct electricity because they have free electrons
what is graphite
Non-metal that conducts electricity
what is an alloy
A mixture of different metals.
A covalent bond is between what
Non-metal + Non-metal
in a covalent bond atoms share what
electrons
small molecules are usually what
Do they or do not conduct electricity
gases or liquids, don’t conduct electricity
what is the particle theory
Particles are held together by intermolecular forces that get weaker as particles gain energy
what are fullerenes used for
Nanotechnology, electronics and metals
