Big TEST Flashcards
Metallic bonding occurs between
Metal plus metal
Describe what metallic bonding is
Where metals atoms share their outer electrons
Draw a label diagram to show metallic bonding
Describe the general properties of metals
Malleable, shiny, high density, strong, high, melting/boiling point, good conductor heat, plus electricity
Defined the term alloy
A mixture of two or more elements with one of them being a metal
Explain why metals can conduct electricity
They have delocalised electrons
Explain why metals are malleable
The atoms are arranged in layers
What are the sizes of the radius or an atom and the radius of the nucleus?
0.1 NM and 110,000 of the radius of an atom
Ionic bonding occurs between
Metal and a non-metal
What elements make positive ions?
Metals
What elements make negative ions
Nonmetals
Describe what happened to the electrons during ionic bonding
Metals electrons are given to the nonmetals in order for them both have a full outer shell
Joe.and cross diagram to show an atom, turning into an ion for sodium and chlorine
Draw a dots and cross diagram to sodium chloride
Describe how ions are attracted to each other during ionic bonding and what type structure they form
Electrostatic charge and an ionic compound
Explain why ionic compounds have high melting/boiling points
They have strong full outer shells and strong ionic bonds
Explain why ionic compounds can conduct electricity when molten or dissolved, but not in a solid state
They have a delocalised electron, which can carry the energy for it
Describe what empirical formulas is
The simplest form
Describe the common properties of covalent compounds
High melting/boiling point
Define the term small molecules and give at least two examples of small molecules
Molecules with a simple structure, water and methane
Draw 1 dot cross diagram to show covalent bonding between methane CH4
How does cross-linking affect the strength of polymer?
It makes it stronger as the two electrons for a covalent bond
Describe the difference between intramolecular and intermolecular forces and state where these are found in Chains of polymers
Molecular bonds within a molecule in molecular are attractions between molecules
Describe the general properties of giant covalent structures
High melting/boiling point and strong
Describe and explain the structure of graphite
Made of hexagon with intermolecular forces between the layers
State the uses of fluorine and explain how its uses relate to its structure
Administering drugs to a certain part of the body, because it has the ability to trap other molecules inside
