3.5 Covalent Bonding Flashcards
What is a covalent bond?
A covalent bond is compound consisting of two or more non-metals.
How are covalent bonds formed?
When non-metals react together, neither atom can give away electrons. So they get the electronic structure of a noble gas by sharing electrons. The atoms in the molecules are then held together by the shared pairs of electrons
How can covalent bonds be represented?
You can represent the bonding in a covalent molecule by showing
A) the highest energy levels (or outer shells)
B) the outer electrons in a dot and cross diagram
C) the number of covalent bonds
Double bonds, as in the O2 molecule can be shown by two lines ie O=O in an oxygen molecule
What are some examples of giant covalent structures?
Diamond, graphite, silica.
What is another name for giant covalent structures?
Macromolecules.
What is a giant covalent structure?
A substance with giant structures where huge numbers of atoms are held together by a network of covalent bonds.
