This preview shows page 1. Sign up to view the full content.
Unformatted text preview: mselves
Insert Figure 4.2 Compounds
Compound – Molecule that contains 2 or more
different elements Solution – Evenly distributed mixture of 2
The 2 compounds in a solution are:
Solvent - the greater component
Solute - lesser component
Water is the solvent for many solutions. Solubility
Insert figure 4.3 Describes how
dissolves in a
Ion – Electrically-charged atom or group of atoms.
Ions form when the atom or group of atoms gains
or loses 1 or more electrons
Negative charge - gain of
OH (hydroxide ion) Positive charge - loss of an
H+ (hydrogen ion) Insert Figure 4.4 What Are Acids and Bases?
Acids – Donate hydrogen ions
Bases – Accept hydrogen ions
pH – Measure of acidity or alkalinity of a solution
Insert Figure 4.5 What’s a Chemical Reaction?
Process that changes atomic arrangement of
Process by which molecules in food are
mechanically and chemically broken down Metabolism
Chemical reactions occurring in living cells Enzymes
Enzyme – Protein that speeds up the rate of a
chemical reaction but is not altered during the
Names of most enzymes end in “ase”...
View Full Document
- Spring '13