3.1.3.1 Ionic Bonding Flashcards
What happens to ionic compounds in water?
They dissociate
What are the properties of ionic compounds?
High melting point
Only conduct electricity when molten or dissolved in water
Soluble in water
Brittle (shatter easily)
How is an ionic bond formed?
Between metals and non-metals
Electrons are transferred from metal to non-metal atoms
Positive and negative ions are formed
Ions are attracted by electrostatic forces
What is the structure of an giant ionic structure?
Forms a regular lattice where each positive ion attracts four negative ions
Do giant ionic lattices have high melting points?
They’re always solid at room temperature as enough energy must be supplied to break up the lattice of ions
Do giant ionic lattices conduct electricity?
Only when molten or dissolved in water as the ions are free to move and carry a charge
Are ionic lattices soluble?
Yes because water is a polar molecule so it attracts the molecule
What are lattices?
Repeating structure
Why do metals form positive ions and non-metals form negative ions?
Elements on the same row increase in charge from left to right which means an electron is more likely to be closer to the nucleus and so energetically, it is better for metals to lose electrons and nonmetals to gain electrons
Why is an ionic bond formed?
Because of the opposing charges
Are there any molecules in a lattice?
No
What can ionic solids dissolve in?
Polar solvents
