The choice of materials for a job depends on their properties.
For Grades: 9-12
Learning Goal 4
Increased knowledge of the properties of particular molecular structures helps in the design and synthesis of new materials for special purposes.
For Grades: 6-8
Learning Goal 1
Sanitation measures such as the use of sewers, landfills, isolation, and safe food handling are important in controlling the spread of organisms that cause disease. Improving sanitation to prevent disease has contributed more to saving human life than any advance in medical treatment.