OCR Chemistry Salters B

Question	Answer
First Ionisation Enthalpy	The first ionisation energy is the energy needed to remove one electron from each atom in a mole of gaseous atoms forming one mole of gaseous ions each with a single positive charge. Image: e50cb783-93a2-458e-9e65-26650ae83797 (image/jpg)
Ionic Bonding	Occurs between metals and non metals. Electrons are transferred from metal atoms to the non metal atoms. This often gives both atoms a stable electronic structure.
Properties of Ionic substances	They have high melting and boiling points. They usually dissolve in water and can conduct electricity when molten or dissolved in water.
Covalent Bonding	Occurs between non metals. Bonds between atoms are formed by sharing electrons. This is called covalent bonding. By sharing electrons the atoms achieve a more stable electron structure.

Resource summary

	Created by Emily Carson over 9 years ago