Ionic Bonding !!

What is an ion?

a charged particle

What are negative ions?

an atom that has more negative electrons than positive protons

When are negative ions formed?

when non-metal atoms gain electrons

How do you write the name of a negative ion?

"name of atom +ide" ion

What is a positive ion?

an atom that has more positive protons the negative electrons

When is a positive ion formed?

when metal atoms lose electrons

How do you write the name of a positive ion?

"name of atom" ion

Why do atoms lose or gain electrons?

to achieve a full outer shell of electrons

What is a superscript?

a small number that is written at the top right hand side of an atomic symbol to indicate charge on an ion

What is a subscript?

a small number that is written at the bottom right hand side of an atomic symbol to indicate how many of that type of atom are present

What is an ionic bond?

The electrostatic attraction between positive and negative ions

Ionic bonds are _______ bonds

strong

What type of elements form ionic bonds?

metals and nonmetals

What is an ionic compound?

A compound that consists of positive and negative ions

What do ionic compounds form?

lattice structures

What is a lattice?

the structure formed by ionic compounds consisting of oppositely charged ions - each positive ion surrounded by negative ions and each negative ion surrounded by positive ions

Why do ionic compounds have ______ melting and boiling points?

high, because strong ionic bonds must be broken in order to break up the lattice.

What state is an ionic compound?

solid

What is formed when ions dissolve in water?

aqueous solutions

What happens when ionic compounds dissolve in water?

as they dissolve the lattice structure breaks up allowing water molecules to surround the separated ions

Are ionic compounds soluble in water?

yes

Meaning of molten?

when a solid has been heated and has changed from a solid into a liquid state

Can ionic compounds conduct electricity when they are solid? Why?

no, because the ions are packed closely together in the lattice and are not free to move

Can ionic compounds conduct electricity when they are molten or dissolved in water? Why?

yes, because the lattice structure is broken up and the ions are then free to move

Conduction in ionic compounds can be explained by

the movement of ions towards oppositely charged electrodes