BSCI 105 Chapter Notes - Chapter 2: Electronegativity

• School: University of Maryland
• Department: Biological Sciences Program
• Course: BSCI 105
• Professor: Norma Allewell

Document Summary

Bsci105 chapter 2: the chemical context of life. Subatomic particles: o o o o o o o. Energy levels of electrons: o o o o o o o o o. Chemical reactions: the making and breaking of chemical bond, leading to changes in the composition of matter. o o o o o (ex: 2h2 + o2 2h2o) write a chemical reaction with an arrow to indicate the conversion starting with the reactants (starting material) leading to the product. All chemical reactions are reversible and the opposite-headed arrows indicate this type of reaction. One of the factors affecting the rate of a reaction is the concentration or reactants. The greater the concentration of reactant molecules, the more frequently they collide with one another and have an opportunity to react and from products. Chemical equilibrium: the point at which the reactions offset one another. It means that their concentrations have stabilized at a particular ratio.