How are compounds formed?
When atoms of two or more elements are chemically combined together
What is an isotope?
Isotopes are different atomic forms of the same element, which have the same number of protons but a different number of neutrons
What is ionic bonding?
Ionic bonding is where an electron from one atom is transferred to another atom.
This creates 2 ions as one atom looses an electron and one gains one.
What type of bond is an ionic bond?
An electrovalent bond
What does ionic bonding happen between?
A METAL and a NON-METAL
When do positive ions form?
When metal atoms loose electrons
What does the number of electrons lost determine?
Rge number of positive charges on the ion
What is a chemical bond?
Transferring or sharing electrons in the outermost shell
What happens when an element gains a full outer shell?
It reaches noble gas configuration
What type of lattice do ionic compounds have?
Giant ionic lattices
What forces occur in giant ionic lattices?
Very stong electrostatic forces of attraction, between oppositely charged ions, in all directions