Periodic Table. Alabama Course of Study 3.) Determine the number of protons, neutrons, and...
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Transcript of Periodic Table. Alabama Course of Study 3.) Determine the number of protons, neutrons, and...
Periodic Table
Alabama Course of Study
• 3.) Determine the number of protons, neutrons, and electrons, and the mass of an element using the periodic table.
• 3.1 Locating metals, nonmetals, metalloids, and noble gases on the periodic table
• 3.2 Using data about the number of electrons in the outer shell of an atom to determine its reactivity
Mendeleev
• Russian chemist• Saw a pattern to
elements• Arrange a table
in order of increasing atomic mass
Shiny/ dull
Conduct Electricity
Conduct Heat
Malleable /Brittle
Ductile
Example
Metal
Nonmetal
Metalloid
3 main categories of Elements•Three main categories of
elements are Metals, Nonmetals, and metalloids.–Metals- shiny, and they conduct heat energy and electric current
–Nonmetals-do not conduct heat or electric current and are dull in color
–Metalloids- have properties of both metals and nonmetals
More details•Metals-shiny, good conductors, malleable, and ductile.
•Nonmetals-dull, poor conductors, brittle, and unmalleable.
•Metalloids- catch-all category or a category that has all the left-overs.
General Terms•Periodic Law- repeating chemical
and physical properties of elements change periodically with the atomic numbers of the elements
•Period- a horizontal row of elements
•Group- vertical row of elements
Metal, Nonmetals, and Metalloids on a Periodic Table
• Metals are to the left of the staircase• They are the elements in tan
• Nonmetals are found to the right of the staircase except Hydrogen• They are in the light blue
• Metalloids- are along the staircase except Aluminum• They are in the green, teal color
Parts of a Periodic Table
Hydrogen is in its own group on the chart with one electron
Group 1Alkali Metals are in the yellow color on this table Characteristics-Electrons in the outer level-1
Most Reactive so they must be stored in oil
Group 2Alkaline-Earth Metals are in the light green color Characteristics-Electrons in the outer level-2 Very Reactive but less than alkali
Groups 3-12Transition Metals are in the green color in the center Characteristics-Electrons in the outer level-1 or 2
3rd Most reactive group
Group 13Boron Group is in the teal color on this table Characteristics-Electrons in the outer level-3
4th most reactive
Lanthanides- Purple on table/ shiny in color and reactiveActinides- Blue on table/ do not occur in nature and are man-made
Group 14Carbon Group is in the light blue color on this table Characteristics-Electrons in the outer level- 4 5th most reactive
Group 15Nitrogen Group is in the tan color on this table Characteristics-Electrons in the outer level- 5
6th most reactive
Group 16Oxygen Group is in the orange color on this table Characteristics-Electrons in the outer level- 6
7th most reactive
Group 17 Halogens are in the Red color on this table Characteristics-Electrons in the outer level-7
2nd least reactive
Group 18Noble gases are in the Pink color on this table Characteristics-Electrons in the outer level- 8
Least reactive
Using the info answer the Question
• As the number of electrons increase so does the _____________.
• As you move from left to right in the groups, the number of outside electrons ____________. (increase or decrease)