2-1 Classifying Matter


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  • All water is the same. Pure water smells, tastes, and looks the same. Every pinch of salt tastes equally salty. Every block of gold shines equally.
  • Can atoms be broken down into smaller parts and the matter still have the same characteristics?
  • The elements have different properties when alone. Hydrogen and Oxygen are flammable as elements. But water is not flammable.
  • 2-1 Classifying Matter

    1. 1. Warm-up ( Own Paper ) <ul><li>What instrument would you use to measure temperature? </li></ul><ul><li>Which of the following is a unit of volume? </li></ul><ul><ul><li>a. gram b. atmosphere c. meter d. liter </li></ul></ul><ul><li>What property of matter can you measure using a graduated cylinder? </li></ul>Thermometer Volume
    2. 2. 2-1 Classifying Matter <ul><li>Classify pure substances as elements and compounds. </li></ul><ul><li>Describe the characteristics of an element and the symbols used to identify elements. </li></ul><ul><li>Distinguish pure substances from mixtures. </li></ul><ul><li>Classify mixtures as heterogeneous or homogeneous. </li></ul><ul><li>Classify mixtures as solutions, suspensions, or colloids. </li></ul>
    3. 3. Matter? <ul><li>What is matter? </li></ul><ul><ul><li>Anything that has mass and takes up space </li></ul></ul><ul><li>Why do we need to classify matter? </li></ul><ul><ul><li>Not all matter is the same. </li></ul></ul><ul><ul><li>Different types of matter must be treated differently. </li></ul></ul>
    4. 4. Group the following into 2 or more groups <ul><li>Sand </li></ul><ul><li>Concrete </li></ul><ul><li>Iron </li></ul><ul><li>Orange juice </li></ul><ul><li>Paint </li></ul><ul><li>Air </li></ul><ul><li>paper </li></ul><ul><li>Basketball </li></ul><ul><li>Car </li></ul><ul><li>Monocacy River water </li></ul><ul><li>Vitamin water </li></ul><ul><li>Computer </li></ul><ul><li>Cell phone </li></ul><ul><li>gold </li></ul>
    5. 5. Pure Substances <ul><li>Made up of all the same thing or one type of matter. </li></ul><ul><li>Pure substances have the same properties regardless of sample. </li></ul><ul><li>Subgroups </li></ul><ul><ul><li>Elements </li></ul></ul><ul><ul><li>compounds. </li></ul></ul>
    6. 6. Elements <ul><li>Substances that cannot be broken down into simpler substances. </li></ul><ul><li>Think of atoms. </li></ul><ul><li>Contain only one type of atom. </li></ul><ul><li>It has a fixed composition. </li></ul><ul><li>Examples of elements: </li></ul><ul><ul><li>Aluminum (Al), Gold (Au), Carbon (C) - solids </li></ul></ul><ul><ul><li>Bromine (Br 2 ), Mercury (Hg) - liquids </li></ul></ul><ul><ul><li>Oxygen (O 2 ), Nitrogen (N 2 ) - gases </li></ul></ul>
    7. 7. Compounds <ul><li>Substances that are made up of two or more simpler substances. </li></ul><ul><ul><li>The simpler substances can be either elements or other compounds. </li></ul></ul><ul><ul><li>They are combined in chemically defined ratios. </li></ul></ul><ul><ul><li>H 2 O – Water </li></ul></ul><ul><ul><li>C 6 H 12 O 6 – Glucose (Sugar) </li></ul></ul>
    8. 8. <ul><li>The make-up of mixtures are not fixed. </li></ul><ul><li>Properties vary by mixture contents. </li></ul><ul><li>They retain some of the properties of the individual substances. </li></ul><ul><ul><li>Sand </li></ul></ul><ul><ul><li>Dirt </li></ul></ul><ul><ul><li>Mac & cheese </li></ul></ul>Mixtures
    9. 9. Which of the following are pure substances? <ul><li>Sand </li></ul><ul><li>Copper wire </li></ul><ul><li>Your Phone </li></ul><ul><li>Your notebook </li></ul>
    10. 10. Which of the following is a mixture? <ul><li>Pure water </li></ul><ul><li>24 karat gold ring </li></ul><ul><li>Iron rod </li></ul><ul><li>River water </li></ul>
    11. 11. Which of the following is not an element? <ul><li>Gold </li></ul><ul><li>Sugar </li></ul><ul><li>Iron </li></ul><ul><li>Zinc </li></ul>
    12. 12. Which of the following is a compound? <ul><li>H 2 O </li></ul><ul><li>Au </li></ul><ul><li>Cu </li></ul><ul><li>Fe </li></ul>
    13. 13. Heterogeneous Mixtures <ul><li>The Greek words hetero and genus meaning “different” and “kind.” </li></ul><ul><li>Two or more types of atoms, physically combined in no definite ratio. </li></ul><ul><li>Different throughout. </li></ul>
    14. 14. Homogeneous Mixtures <ul><li>Two or more substances, physically combined in no definite ratio. </li></ul><ul><li>Same throughout. </li></ul>
    15. 15. Matter Classification Matter Pure Substances Mixtures Elements Compounds Homogeneous Heterogeneous