Revision(Units1&2) Flashcards
Name 3 atoms with covalent network structure
- )Boron
- )Carbon
- )Silicon
Define Bonding Continuum
The sliding scale between ionic bonding and pure covalent bonding. Polar covalent bonding lies between these extremes.
Define Collision Theory
The theory that for a reaction to occur the reactant particles must come into contact with correct collision geometry
Define covalent radius and explain how it is measured.
The measure for the size of an atom.
It’s measured by half the nuclei of two covalently bonded atoms.
Define Dipole
An area with a higher concentration of negative or positive charge.
Fullerene
Molecules of pure carbon with the formula(C↓60 or C↓70).
Define ionic bond
Electrostatic attraction between positively and negatively charged ions.
Define Ionic radius
Measure of the size of an ion
At what state do at atoms have to be in, in order to measure their ionisation energy.
Gaseous state (g)
Define metallic bond
The electrostatic attraction between positively charged ions and delocalised electrons.
Define Viscosity.
A measure of how thick a liquid is.
Define Enthalpy change
The difference in energy, between the reactants and products.
Energy of Reactants - Energy of Products = ΔH enthalpy change = ΔH
What is a standard solution
Precisely/accurately know concentration of a solution.
How should a pipette be filled?
Fill a pipette to above the mark and then release liquid from the pipette until the bottom of the miniscus touches the mark.
Define Feedstock
A chemical from which other chemicals are manufactured.
