Section 3and 4 Flashcards
What is electrical conductivity
The ease at which electricity passes through a substance
What is Density
Mass(g)/volume(cm cubed)
What is Hardness
The ability of a substance to resit being scratched
What is Strength
How difficult it is to pull apart or crush
What is Flexibility
The ability of a substance to bend without breaking
What is Malleability
The ability of a substance to be harmed or beaten into flat sheets without breaking
What is Ductility
The ability of a substance to be pulled into thin wires
What is solubility in water/organic solvents
The maximum mass of a solute can dissolve in water/organic solvents at a standard temperature
What is giant metallic
Found in metals where metallic bonds hold together positive metal ions via a sea of delocalised electrons
What is giant ionic
Found in compounds of metals with non metals
What is giant covalent
Very large covalent molecules where atoms are joined by covalent bonds throughout the three dimensional structure
What is molecular covalent
Aka covalent molecular or simple covalent. Molecular covalent molecules have strong covalent bonds between the atoms within a molecule and weak attractions between separate molecules
What is an alloy
A mixture of two or more elements at least one of which is a metal and the resulting mixture has metallic properties
Properties of giant ionic structures
High melting and boiling points
They are brittle
Electrical insulators when solid
Electrical conductors when a liquid
Usually soluble in water
Properties of molecular covalent
Very low melting and boiling points
Brittle and soft if solid
Electrical insulators
Insoluble in water
Soluble in organic solvents
