Mixtures

• Mixtures are composed of two or more different types of substances.
• Pure substance (molecules) and/or elements
• Example
• Saline solution is made up of table salt (NaCl or sodium chloride) and water (H2O).
• The composition of mixture can vary in proportions.
• Types of mixtures
• Homogeneous
• The composition is the same throughout the sample.
• Examples
• Air, bronze, or sweet tea
• Heterogeneous
• The composition varies throughout the sample.
• Example
• Forest floor