An enormous variety of biological, chemical, and physical phenomena can be explained by changes in the arrangement and motion of atoms and molecules.
Learning Goal 8
The configuration of atoms in a molecule determines the molecule's properties. Shapes are particularly important in how large molecules interact with others.
Learning Goal 9a
The rate of reactions among atoms and molecules depends on how often they encounter one another, which is affected by the concentration, pressure, and temperature of the reacting materials.
Learning Goal 9b
Some atoms and molecules are highly effective in encouraging the interaction of others.
Learning Goal 10
The physical properties of compounds reflect the nature of the interactions among its molecules. These interactions are determined by the structure of the molecule, including the constituent atoms and the distances and angles between them.
For Grades: 9-12
Learning Goal 7
Thermal energy in a system is associated with the disordered motions of its atoms or molecules. Gravitational energy is associated with the separation of mutually attracting masses. Electrical potential energy is associated with the separation of mutually attracting or repelling charges.