Medical Chemistry Lecture By : Asst. Lect. Tariq Al Mgheer College of Medicine- Babylon University

Matter And Energy
Matter define as anything that has mass and occupies space.
PROPERTIES OF MATTER -
A particular kind of matter, such as water, gold, silver, salt, or sugar, is called a substance. Every substance has a characteristic set of properties that makes it different from all other substances. These properties give it a unique identity. For example, sugar is an odorless, white solid that has a sweet taste. When heated, sugar melts and turns brown. The properties of a substance that are characteristic of that substance are called its intrinsic properties. The^e properties do ,".ot depend on the size or shape of the substance.
Some intrinsic properties are more uSefU ihan others in describing matter, such as melting, boiling points and densities. They are easily measured and expressed in numbers, it is give numerical values. For example th© specific pi-operties of water are its boiling point (100° C), melting point (0° C), and density (1.0 g/rnL at 4°C). No other substance has exactly this set of properties These intrinsic properties are called physical properties.
Many substances react, either alone or with other matter, to form new materials. These reactions are called tne chemical prop srties of a substance. CLSSIFYING