Final Exam Review Section 1

Question 1

Density Formula

Answer 1

Mass (g) / Volume (ml or cm^3)

Question 2

Pure Substances

Answer 2

-Have a unique set of physical properties.
-Cannot be separated into two or more different species by any physical technique

Question 3

Elements

Answer 3

Substances which cannot be subdivided by chemical or physical process

Question 4

Compounds

Answer 4

Groups of 2 or more different atoms joined by chemical bonding

Question 5

Molecules

Answer 5

Two or more atoms (same or different) joined together chemically

Question 6

Mixtures

Answer 6

Consist of two or more pure substances that can be separated by physical techniques

Question 7

Heterogenous Mixture

Answer 7

A mixture in which the components of a mixture are unevenly distributed

Question 8

Homogenous Mixture

Answer 8

A mixture in which the components of a mixture are evenly distributed
-Often called solutions

Question 9

Physical Properties

Answer 9

Properties that can be observed and measured without changing the composition of the substance
Includes:
-Color
-State of Matter
-Melting & Boiling point
-density
-solubility
-conductivity
-malleability & ductility
-Viscosity

Question 10

Intensive Properties

Answer 10

Bulk property; Physical property does not depend on the size or amount of the sample
-Density, Odor, color, luster, malleability, ductility, conductivity, hardness, melting & Boiling point

Question 11

Extensive Properties

Answer 11

Physical property that changes with the size of the sample measured
-Mass, Volume, Length, Total charge

Question 12

Chemical properties

Answer 12

Properties that change the composition of the substance through chemical reactions