2.1 notes
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This document classifies matter as either pure substances or mixtures. Pure substances are uniform throughout and can be elements, which contain only one type of atom, or compounds, which contain two or more elements joined together. Mixtures are not uniform and can be either heterogeneous, with noticeably different parts, or homogeneous, with evenly distributed parts. Mixtures are further classified as solutions, suspensions, or colloids based on the size of particles in the mixture.
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2.1 notes
- 1. Ch 2-1 Classifying Matter Composition means a putting together. Materials are classified as pure substances or mixtures
- 2. Pure Substance A fixed uniform composition that has the same properties throughout Elements A pure substance that cannot be broken down Contains only one atom
- 3. Compounds Two or more element joined in fixed proportion Elemental symbols Au-gold, N-nitrogen, C-carbon, H-hydrogen
- 4. Mixtures Composition is not fixed properties can vary Heterogeneous mixture parts are noticeably different Homogeneous mixture parts are evenly distributed
- 5. Solutions, Suspensions,& Colloids Classified by the size of the particle Clear liquid= solution Particles settle out=suspension Opaque liquid= colloid