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Mr. Zakoski – Room 700 zakoski Bob.zakoski@sduhsd Phone – 760-436-6136 ext 6123

Welcome to Chemistry. Mr. Zakoski – Room 700 www.zakoski.org Bob.zakoski@sduhsd.net Phone – 760-436-6136 ext 6123. Introduction. General information Who am I? Who are you? Info sheet. Handout. Get it signed and return to me. My web site. www.zakoski.org What do we do in Chemistry?.

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Mr. Zakoski – Room 700 zakoski Bob.zakoski@sduhsd Phone – 760-436-6136 ext 6123

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  1. Welcome to Chemistry Mr. Zakoski – Room 700 www.zakoski.org Bob.zakoski@sduhsd.net Phone – 760-436-6136 ext 6123

  2. Introduction • General information • Who am I? • Who are you? Info sheet. • Handout. Get it signed and return to me. • My web site. www.zakoski.org • What do we do in Chemistry?

  3. What is Chemistry? • Chemistry is the study of the interaction of matter, energy, and entropy.

  4. The Relationship of Matter and Energy • What is matter? • Has mass and takes up space. • What is energy? • (physics) The capacity of a physical system to do work. • What is entropy? • A measure of the disorder of a system.

  5. Intercovertability of Matter and Energy • E = mc2 • Matter-antimatter reactions are the classic examples of the interconvertibility of mass and energy. If you slam a proton and an anti-proton together, you get gamma rays -- mass has been converted to radiation, which is massless but energetic. Conversely, if you put enough radiation in a small enough area, you'll provoke the creation of a pair of particles, one normal matter and one anti-matter -- energy has been converted into mass.Nuclear reactions are another common way to see the equivalence. When energy is realeased by a nuclear reaction, you can be assured that the products have less total mass than the reactants.

  6. Energy and Entropy • Energy and entropy are in opposition to each other. • The Universe is a example of energy and entropy in balance.

  7. Summary • Matter and energy make up everything. • Energy and entropy are in opposition. • In Chemistry we study the interaction of matter, energy, and entropy.

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