Classifying Matter Physical Science

Classifying Matter PURE Matter is either Pure Substance or a Mixture Element – contains only 1 type of atom Compound – elements combined in fixed proportions.

Compounds Compounds can be broken down into simpler substances, elements cannot. Compounds have a fixed composition, mixtures do not.

Mixtures Heterogeneous mixture – composition is not uniform Homogeneous mixture – composition is uniform

Homogeneous or Heterogeneous? Chocolate chip ice cream Vanilla ice cream Cake batter Chicken noodle soup Sand

Types of Mixtures The mixture type is based on particle size. Solution – substances dissolve and form homogeneous mixture. Suspension – substances will separate over time and form heterogeneous mixture. Colloid – substances are suspended but will not separate over time.

Separating Mixtures Filtration – based on PARTICLE SIZE Distillation – based on BOILING POINTS.

States of Matter Solid – definite shape and volume Liquid – definite volume, indefinite shape Gas – indefinite volume, indefinite shape

Properties of Matter Physical properties – can observe/ measure without changing matter Chemical properties – can only observe or measure by changing matter

Physical or Chemical? Melting point Flammability Boiling point Density Malleability Hardness Reactivity Conductivity