READ p.14-23 Section 1.1 Classifying Matter 7.1 Classification by Composition: What is stuff made of? Qualitative: Expresses Composition Quantitative: Uses Measurements carbon hydrogen oxygen 42% carbon 51% oxygen 7% hydrogen Sucrose
7.2 Substance: Matter that has a uniform and definite composition. Contains only one kind of matter. Yes Not Sucrose Lemonade
Classification by Purity: Is it pure or a mixture? 7.3 Pure: Every bit of matter being examined is the same substance.
Classification by Purity: Is it pure or a mixture? 7.4 Mixture: Combination of two or more substances. + Water = Mixture
Classification by Purity: Is it pure or a mixture? 7.5 Ask yourself if it can be broken down into two or more substances
Separation of Mixtures 7.6 Separating mixtures into pure substances. Side Note: Separation is a huge part of chemistry and what chemist do
Separation of Mixtures 7.7 Many, many, many ways to separate substances. Easiest way is to take advantage of Physical Properties.
7.8 Physical Properties: Characteristic or condition of a substance that can be observed without changing the composition. Examples: mass, color, volume, boiling point. Physical Change: Change in matter that does not involve change in its chemical composition.
Two Kinds of Mixtures Heterogeneous: Not uniform in composition (different). 7.9 Homogeneous: Completely uniform composition (same).
Solution: Special name for homogeneous mixture. 7.10 Examples of Solutions: solid-liquid gas-gas metal-metal Bronze Alloy: Solutions that contain different metals.
Alloy Composition Example 7.11 Bronze Copper Zinc Tin Brass Copper Zinc Sterling Silver Silver Copper 14-Karat Gold Gold Silver Copper
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Kool-Aid Mix
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Kool-Aid Mix Water
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Water
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Chocolate Water
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Chocolate Water Milk
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Chocolate Water Milk Soda Pop
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Chocolate Water Milk Soda Pop CO 2
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Chocolate Water Milk Soda Pop CO 2 Water
TWO PARTS OF A SOLUTION 7.12 Solute: Substance that is least abundant - being dissolved. Solvent: Substance that is most abundant does the dissolving. Solute Solvent Kool-Aid Chocolate Milk Kool-Aid Mix Chocolate Water Milk Soda Pop CO 2 Water Aqueous: Term for when the solvent is water.