Unit 1 Definitions Flashcards
1
Q
What is the definition of activation energy?
A
The energy required by colliding molecules to form an activated complex.
2
Q
What is the definition of an activated complex?
A
The activated complex is an unstable arrangement of atoms formed at the maximum of the potential energy barrier, during a reaction.
3
Q
What is the definition of catalyst?
A
A substance which speeds up a reaction without itself being used up. It lowers the activation energy of the reaction.
4
Q
What is the definition of the first ionisation energy?
A
The energy required to remove one mole of electrons from one mole of gaseous atoms.
5
Q
What is the definition of electronegativity?
A
The measure of the attraction that the nucleus of an atom involved in a bond has for the electrons in the bond.
