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Published by郎 卫 Modified over 6 years ago
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Classifying Matter -Matter is anything that has mass and takes up space. -Basically, stuff. -The building block of matter is the atom. Classifying Matter Element -a pure substance. -made up of the same atoms. -if it’s on the periodic table, it’s an element. Examples: -Vanadium -Technicium -Tungsten Compound -a pure substance -2 or more elements chemically bonded -chemical sounding -sodium chloride -hydrogen peroxie -Iron III oxide -isopropyl alcohol Mixture -2 or more substances mixed together. -can be separated by physical means. -soil -solution of salt water -gold necklace
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Compounds Ionic Bond: Covalent Bond:
Metal to nonmetal is always an ionic bond. Metals are to the left of the staircase line on the periodic table (except hydrogen). The metal will always be first in the formula or name of the compound. NaCl CuO Iron II chloride Potassium phosphate Covalent Bond: Nonmetal to nonmetal bond. Tend to have numeric prefixes in the name. Carbon dioxide Water PCl3 N2O4
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Mixtures Homogeneous: Heterogeneous: Look the same throughout.
Solutions are ALWAYS homogeneous mixtures. Usually separated by distillation or chromatography. Metal alloys tend to be homogeneous mixtures. Examples: Orange juice (no pulp) Koolaid Gold necklace Heterogeneous: Look different throughout. See layers. Usually separated by filtration. Examples: Oil & vinegar dressing Salad Soil Rocky road ice cream
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Classify…..be specific:
1. Sodium bicarbonate 2. Water 3. Soil 4. Solution of sugar water 5. Phosphorous trichloride 6. Carbon Dioxide 7. Rocky Road Ice Cream 8. Alcohol lol 9. Pure Air 10. Calcium Gluconate
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Properties/Changes of Matter
Physical A property that can be observed without changing the identity of a substance. Melting point, boiling point, etc. Solubility Luster, ductility, malleability. Color Density (mass/volume) A change that occurs without changing the chemical identity of the substance. Any phase change (boiling, freezing, etc.). Dissolving Chemical A property that can only be observed by changing the chemical identity of a substance. Flammability Ability to rust Ability to tarnish A change that occurs and changes the chemical identity of the substance. Combustion Rusting or Tarnishing Rotting or Souring Any chemical reaction Color change. The creation of a new substance in a reaction is always chemical.
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Identify: Physical of Chemical Change
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Kinetic Theory of Matter
SOLID STATE Very little particle motion Very little average kinetic energy Tightly packed particle bonding LIQUID Moderate particle motion Moderate average kinetic energy Moderate particle bonding GAS STATE Fast particle motion High average kinetic energy No particle bonding
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Phase Change Diagrams
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