Warm Up List as many biological processes as you can that involve chemistry.

Chapter 2: Chemistry of Life Section 2 Energy Pgs 35-36

I. Energy and Matter i. Energy: the ability to do work

I. Energy and Matter There are different forms of energy Remember, energy can be converted into different forms

I. Energy and Matter ii. States of Matter 1. Solid A) Particles closely linked in place B) Has a fixed volume and shape 2. Liquid A) Particles move more freely over one another a) Still attracted enough to each other to stay together B) Has fixed volume but not a fixed shape 3. Gas A) Particles move most rapidly a) Have little to no attraction for each other B) Has no fixed volume or shape

I. Energy and Matter

II. Energy and Chemical Reactions i. Chemical reaction: process which one or more substances change to produce one or more different substances 1.The atoms of the substances rearrange to form something different

a) Lets work with iron (Fe) iron + oxygen iron oxide Substances on the left hand side of the arrow are the reactants Substances on the right hand side of the arrow are the products II. Energy and Chemical Reactions

2. Reversible Reactions carbon dioxide watercarbonic acid

II. Energy and Chemical Reactions 3. Activation energy: the amount of energy needed to start a reaction a) Often reactions do not happen spontaneously, they need energy first added to the system

II. Energy and Chemical Reactions

4. Catalyst: a substance that enables a chemical reaction to proceed at a faster rate WITHOUT being changed by the reaction

II. Energy and Chemical Reactions 5. Enzyme: a protein that increases the rate of a chemical reaction WITHOUT being changed by the reaction; an organic catalyst

II. Energy and Chemical Reactions 5. Enzyme: a protein that increases the rate of a chemical reaction WITHOUT being changed by the reaction; an organic catalyst Enzymatic activity of carbonic anhydrase

Homework Read Ch 2 Sec 2, pgs Problem #'s 3, 4, 6 & 7