Elements, Compounds, and Mixtures: A Classification of Matter, Slides of Chemistry

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Elements, Compounds

and Mixtures

CLASSIFICATION OF MATTER

SUBSTANCES

ELEMENTS

and COMPOUNDS

HOMOGENEOUS

and HETEROGENEOUS

MIXTURES

Composition is variable. Composition is in fixed proportions

Substances

Compounds: two or more different atoms CHEMICALLY combined (attached with bonds) in a fixed proportion. Properties Compounds CAN BE broken DOWN with a chemical reaction Ternary Compound 3 or more different types of atoms chemically bonded. Examples: Binary Compound 2 different types of atoms chemically bonded.

Ternary Compounds

Mixture: any two or more different substances physically combined. Mixtures are EASILY separated by physical means. Ex: Salt water The substances in a mixture maintain their chemical and physical properties.

Particle Diagrams Aim: To represent the different forms of matter using particle diagrams.

• Please label each of the following as a substance or a mixture of substances.
• Please identify what substances are in the box as either an element ; diatomic or monatomic. Or a compound ; binary or ternary.

DO NOW

Allotrope: two forms of the same element with different physical and chemical properties. Allotropes have a different structural arrangement of atoms.

Element Properties