Mendeleev- created the first periodic table using atomic mass and characteristics to sort the elements
Periodic table- table that uses atomic number to organize the elements
Nuclues-the center of an atom
Proton-positive paticle of an atom found inside the nucleus
Neutron-neutral particle found inside the nucleus
Electron-negative particle found outside the nucleus
Atomic Number- how many protons an element has
Atomic Mass- average mass of an element
Symbol- 1 or 2 letters that represent an element
Periods- horizontal rows
Families/groups- vertical columns
Valence electrons- outer orbit electrons
Orbits-what the electrons are contained in
Know how many electrons are in the first three orbits- 2, 8,8
Metals- metals are: hard, shiney, ductile, and malleble, metals are also good conductors
Alloys- two or more metals mixed together
Nonmetals- located to the right of the zigzag line
Metalloids- have characteristics of both metals and nonmetals, touching the zigzag line
Telll how many valence electrons are in each family and what group number each family is in. Alkali Metals- one valence electron and is located in group 1
Alkaline earth metals- two valence electrons and located in group 2
Transition elements- all elements are similar, grouops 3-12
Lanthanides and Actinides- bottom elements
Carbon Family- row 14 has 4 valence electrons
Nitrogen Gamily- row15 has 5 valence electrons
Oxygen Family- row 16 has 6 valence electrons
Halogen Family- row 17 has 7 valence electrons Noble Gases- row 18 has a full outer shell of electrons
This is our Periodic Table and Elements unit!!!
Mendeleev- created the first periodic table using atomic mass and characteristics to sort the elements
Periodic table- table that uses atomic number to organize the elements
Nuclues-the center of an atom
Proton-positive paticle of an atom found inside the nucleus
Neutron-neutral particle found inside the nucleus
Electron-negative particle found outside the nucleus
Atomic Number- how many protons an element has
Atomic Mass- average mass of an element
Symbol- 1 or 2 letters that represent an element
Periods- horizontal rows
Families/groups- vertical columns
Valence electrons- outer orbit electrons
Orbits-what the electrons are contained in
Know how many electrons are in the first three orbits- 2, 8,8
Metals- metals are: hard, shiney, ductile, and malleble, metals are also good conductors
Alloys- two or more metals mixed together
Nonmetals- located to the right of the zigzag line
Metalloids- have characteristics of both metals and nonmetals, touching the zigzag line
Telll how many valence electrons are in each family and what group number each family is in.
Alkali Metals- one valence electron and is located in group 1
Alkaline earth metals- two valence electrons and located in group 2
Transition elements- all elements are similar, grouops 3-12
Lanthanides and Actinides- bottom elements
Carbon Family- row 14 has 4 valence electrons
Nitrogen Gamily- row15 has 5 valence electrons
Oxygen Family- row 16 has 6 valence electrons
Halogen Family- row 17 has 7 valence electrons
Noble Gases- row 18 has a full outer shell of electrons