Differentiate between a mixture and a compound.. Key concepts/skills: Level 1: Define key vocabulary. Level 2: Given a substance, differentiate between.

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Presentation transcript:

Differentiate between a mixture and a compound.

Key concepts/skills: Level 1: Define key vocabulary. Level 2: Given a substance, differentiate between compounds and mixtures Level 3: Understand and differentiate among the levels of chemical complexity from atoms to molecules to compound s to mixtures.

Key vocabulary Atom Element Molecule Compound Mixture Heterogeneous Homogeneous

Atom Smallest part of a substance still having the properties of the substance. Element Many identical atoms together. Examples Carbon - C Nitrogen – N Sodium - Na Molecule Different types of atoms bonded together chemically. Examples H 2 O, CO 2 Heterogeneous Mixtures Mixtures that are NOT mixed evenly. “Different throughout” Example Salad Homogeneous Mixtures Mixtures that are mixed evenly throughout “same throughout” Example Salt water Compound Many identical molecules together. Cannot be separated by physical means. Examples Glass of water Spoon of salt Elements lose Identity Mixture 2 or more compounds mixed but not chem. Bonded. CAN be separated physically. Examples Salt water Salad Compounds keep Identity