Mixtures of Matter

Section 3.3

Mixtures

• A mixture is a combination of two or more pure substances.– Examples Sand and water,

Types of Mixtures

• A heterogeneous mixture is one that does not blend smoothly throughout and in which the individual substances remain distinct.

• A homogeneous mixture has constant composition throughout; it always has a single phase.

Solutions

• Homogeneous mixtures are also referred to as solutions.– Gas-gas– Gas liquid– Liquid-gas– Liquid-liquid– Solid-liquid– Liquid-solid

Solutions

• Homogeneous mixtures are also referred to as solutions.– Gas-gas Air– Gas liquid Carbonated beverages– Liquid-gas Humid air– Liquid-liquid Vinegar– Solid-liquid Sweetened powdered drink in water– Solid-solid Steel (iron and carbon)

Separating Mixtures

• Chemical or physical properties used– Filtration– Distillation– Crystallization– Chromatography

FiltrationDistillation

Chromatography

Crystallization

Homework

• P. 69 15-17• P. 82. 46-51