2. By: Ben Carroll, Xian Apdian and Peter Cao

3. Chemical reactions take place everyday Digestion in your body relies on chemical reactions. Photosynthesis – occurs in plants to grow. Both are necessary to sustain life. Reactants Products Proposed by John Dalton. Reactions break old bonds and form new ones that hold the atoms together. Atoms are never created or destroyed. Theory explains Law of Conservations of Mass.

4. The number of atoms in the product are the same as the ones in the reactant. Chemical reactions can be described in many ways. Rusting iron (III) oxide Hydrogen Peroxide water + oxygen Methane + oxygen carbon dioxide + water

5. Without chemical reactions we wouldn’t have important products that keep us alive or healthy.

6. Name 2 chemical reactions that make daily life possible. A. Photosynthesis B. Digestion

7. How to write a chemical equations. An arrow separates the formulas of the reactants from the formulas of the products (Reactants Products) > Examples: Fe + O 2 Fe 2 O 3 Skeleton equations – A chemical equation that doesn’t indicate the relative amounts of the reactants and products. Physical states can be represented by…  Solid (s)  Liquid (l)  Gas (g)  Acid (aq) Example: Fe(s) + O 2 (g) Fe 2 O 3 (s)

8. Catalysts – a substance that speeds up a reactions without being used up (it isn’t a reactant to the product) Example: H 2 O (aq) H 2 O (l) + O 2 (g) MnO 2 is the catalyst for Hydrogen Peroxide. MnO 2

9. Give the correct formulas that would form the following products 1)H 2 O A. H+O H+O C. H 2000 +O 4000 B. H 2 +O 2 D. H 3 +O 3

10. Some major professions that need to know how to write chemical equations… Chemical Engineering Forensic Science Biology

11. Identify the reactants and products of the following chemical reactions. (Reactants Products) Example: Sodium + Chlorine Salt Hydrogen and Oxygen merges to form water. Sucrose is formed by Carbon, Hydrogen, and Oxygen. When Nitrogen and Hydrogen are contained together, they combine and form Ammonia.

12. Sorry that was such a boring presentation Enjoy a picture of baby Mr. Sweeten