Classifying Matter

What is matter? Matter: anything that has mass and takes up space.

Matter It is broken down into two categories: pure substances and mixtures.

Pure Substance: Composition and properties never change from one sample to the next Ex: Table salt, Oxygen, pure water

Mixtures: Composition and properties can change from one sample to the next Ex: Salsa, lemonade, milk

Element: pure substance that cannot be broken down into simpler form by ordinary means Contain only 1 type of atom Atom: smallest particle of an element that keeps the properties of the element

Examples of Elements Gold Sodium Chlorine Precious Metal Reactive metal Green Gas

Compound: Pure substance made of two or more elements joined in definite proportions Made of 2 or more types of atoms Ex: Water (H2O),

Compounds Properties of compounds differ from the elements that make them up: O H2 Hydrogen + O2 Oxygen H H H2O (Gas) (Gas) Water (liquid)

Types of mixtures Heterogeneous mixture: Parts are unevenly mixed Chocolate chip cookie Homogeneous mixture (solutions): Parts are evenly mixed throughout Salt water, sugar water

Matter Pure Substance Mixture Matter Tree Matter has mass and occupies space Pure Substance Composition always same Mixture Composition Can change Element Made 1 kind of atom Compound Made Two or more kinds Of atoms Homogeneous Evenly Mixed Heterogeneous Unevenly Mixed