Q/A From looking at valence electrons, list all the elements that Mg would most likely bond with. Why ? Mg will most likely bond with: O, S, Se, Te They will bond because Mg wants to give two electrons away and the others want to take two.

Compounds Atoms do not like to exist alone, they create bonds which shape and form matter. These bonds are ionic, covalent, metallic and hydrogen. How they form, and what they form to, help determine the bond. It’s all about what is happening to the electrons.

IONIC

Ionic Compounds: When positive and negative ions transfer electrons Na +1 Cl -1 They have opposite charges so they attract Sodium gives one electron to chlorine Ionic compounds combine metals to non-metals

Sometimes this isn’t a 1-1 ration. Think of Calcium and Fluorine Calcium- +2 electrons that it can lose Fluorine- -1 electron that it needs How can it make a stable compound ?

When Calcium and Fluorine combine, they need: 1 Calcium Atom 2 Fluorine Atoms See for yourself, draw it out!

Ionic Compounds What’s special about Ionic Compounds? They dissolve in water When dissolved, the water + compound can conduct electricity Why? Because they separate from each other and can now carry an electric current

Covalent

Covalent Bonds Share electrons Formed from non-metals with other non-metals They do not conduct electricity at any state Examples; O2, CO2, C2H6, H2O, SiC

Metallic

Metallic Bonds Formed between atoms of metallic elements Holds metals together very strongly Include all alloys Good conductors at all states, lustrous, very high melting points Examples; Na, Fe, Al, Au, Co

Classwork Complete Chemical Bonding Worksheet