W ARM UP 11/11/14 Question: What is atomic number? Answer: The number of protons in the atom. Each element has a unique atomic # Goal: I will explain atomic.

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W ARM UP 11/11/14 Question: What is atomic number? Answer: The number of protons in the atom. Each element has a unique atomic # Goal: I will explain atomic number & identify subatomic particles.

ELEMENT OF THE DAY 27 – Cobalt – Co Cobalt steel is one of the hardest steel alloys and is used in drills and machine bits. Cobalt compounds are often blue, and are used to tint glass. 60 Co is a highly radioactive version of cobalt that is present in nuclear fallout.

A GENDA - Bellwork /M & M reminder! - Review Rutherford - Atom Review - Warm ups due tomorrow! - Homework -Per 1,2,8: pg Per 4, 6: pg M&Ms for extra credit -Quiz next Tuesday