Science Trimester 3

Beschreibung

8th grade Science Mindmap am Science Trimester 3, erstellt von Aemilia Blais am 22/05/2017.
Aemilia Blais
Mindmap von Aemilia Blais, aktualisiert more than 1 year ago
Aemilia Blais
Erstellt von Aemilia Blais vor etwa 7 Jahre
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Zusammenfassung der Ressource

Science Trimester 3
  1. Lecture 18
    1. Who created the Periodic Table?
      1. Dimitrii Mendeleev
      2. The Periodic Table
        1. 3 Categories
          1. Metals
            1. Shiny, Malleable, Ductile, Good conductors of heat and electricity, Solid at room temperature, Most abundant
            2. Metalloids
              1. Most qualities of meats and non-metals, Electric charge, Good in computers and calculators
              2. Nonmetals
                1. Not shiny, Brittle, Not good conductors of heat or electricity, Solid or gas at room temperature, Do not reflect light
          2. Combining Elements
            1. First, you have to know the element's oxidation number
              1. Find at the top of the chart, or use the sentence
                1. Use the oxidation number to find out what it can combine with.
                  1. Ex. -1 will go nicely with +1
                    1. Sometimes it won't go in nicely, and then you have to use the LCM
              2. Balancing Equations
                1. 4 Types of Equations
                  1. Synthesis
                    1. A+B= AB
                    2. Decomposition
                      1. AB=A+B
                      2. Single Replacement
                        1. AB+C=AC+B
                        2. Double Replacement
                          1. AB+CD= AC+BD
                      3. Chemical Bonds
                        1. Two Types
                          1. Ionic Bond
                            1. Oppositely charged atoms
                              1. Ion - atom with a charge
                                1. + Cation +
                                  1. - Anion -
                              2. Covalent Bond
                                1. Combine by sharing electrons
                                  1. Sometimes is not equal
                                    1. Polar Molecule - unequal sharing so has a charge on each end
                                      1. Nonpolar - opposite of polar
                                2. Electronegativity
                                  1. How strong an atom's attraction for an electron is
                                    1. Calculate by looking at the electronegativity chart and then subtract the two elements
                                      1. Then remember:
                                        1. Greater or equal to 1.7
                                          1. Ionic
                                          2. Between 1.7 and .3
                                            1. Polar Covalent
                                            2. Less than .3
                                              1. Non polar Covalent
                                  2. Binary Formulas
                                    1. Rules for Writing
                                      1. Write the +element Write the - element Write subscripts Use the LCM for the subscripts
                                      2. Rules for naming
                                        1. Write the 1st element (+) full name Write the root of the second element Add the suffix -ide
                                      3. Polyatomic Ions
                                        1. Combinations of elements that act as one
                                          1. Rules for combining with other elements
                                            1. Should combine normally, just remember to think of it as a unit, rather than separate elements
                                              1. When writing, put in parentheses and subscripts go on the outside
                                              2. Rules for writing with other elements
                                                1. Write the positive element first. (This will typically not be the poly) Then write the poly. Use the full name of each.
                                                2. Typically negative ox. number
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