Back to the Basics The Periodic Table.

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Presentation transcript:

Back to the Basics The Periodic Table

Why is it helpful? Metal vs non-metal Groups Charges Diatomic Elements Molar Mass

Metals

Metals Will always be the first part of an ionic compound If in ionic form, will have a positive charge Ionic form means that it has lost electrons, making it a charged particle

Non-metals

Non-Metals Will always be the second part of an ionic compound If in ionic form, will have a negative charge Ionic form meaning it has gained electrons, making it a charged particle

Important Groups Group 1 – Alkali Metals

Important Groups Group 2 – Alkaline Earth Metals

Important Groups Transition Metals

Important Groups Group 3

Important Groups Group 7 - Halogens

Charges Charged particles are called ions Cations = positively charged particles Metals Ammonium ion Anions = negatively charges particles Non-metals Rest of the polyatomic ions We figure out charges based on how far the element is from a filled valance shell (closest noble gas in either direction)

Charges *transition metals, and group 4 can have multiple charges* Zn+2 Ag+1 +1 +2 +3 -3 -2 -1

Diatomic Elements There are 7 diatomic elements. We refer to them as Br I N Cl H O F. These

Molar Mass Molar mass is the mass of one mole of a substance. Units are either g/mol or amu. We use this number when converting between grams and moles