What are cations?
What are anions?
How and why do ions form?
2 reactants in a solution react and either loos or gain electrons depending on their group, so that they have a complete outer shell of electrons, changing their charge
What is different about an atom and an ion?
An atom has 0 charge, an ion has charge An atom has the same number of protons and electrons, an ion doesn’t
What is special about group 4 ions?
They can either be anions or cations
What does -ide and -ate at the end of a compound name mean?
-ate means that there is oxygen in it, -ide means it is pure
What is the formula for the sulphate ion
What is the formula for the chloride ion
what is the fromula for the hydroxide ion
what is the fromula for the nitrate ion
what is the formula for the carbonate ion?
how are ionic compounds held together?
the electromagnetic attraction between the negatively charged and the possitively charged ions holds the ionic compounds together
what are the properties of ionic compounds?
- high meltingpoint
- soluble in water
- does not conduct as a solid
- conducts as a liquid or in solution
why do ionic compounds have high melting and boiling points?
it takes a lot of energy to overcome the strong electromagnetic forces and seperate the ions
why do ionic ompounds conduct electricity when liquid?
ionic compounds conduct electricity when liquid because the chargd ions can move and carry the charge through the liquid