families on the periodic table
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Families on the Periodic Table. Elements on the periodic table can be grouped into families bases on their chemical properties. Each family has a specific name to differentiate it from the other families in the periodic table. Elements in each family react differently with - PowerPoint PPT PresentationTRANSCRIPT
Families on the Periodic TableElements on the periodic table can be
grouped into families bases on their chemical properties.
Each family has a specific name to differentiate it from the other families in the periodic table.
Elements in each family react differently with other elements.
Properties of MetalsMetals are elements that are good conductors of
electric current and heat. They tend to be shiny and bendable.
Physical Properties-1. Luster- shiny and reflective2. Malleable- can be hammered or rolled 3. Ductile- can be pulled out or drawn into long
wires4. Thermal conductivity- ability of an object to
transfer heat5. Electrical conductivity- ability of an object to
carry electric current
Chemical Properties-1. Reactivity- the ease and speed an element
combines or reacts with other substances2. Corrosion- the deterioration of a metal
ALKALI METALSGroup 1Hydrogen is not a member,
it is a non-metalAll are metals and solid at
room temp1 Valence ElectronSoft and silvery, shinyVery reactive, esp. with
waterConduct electricity
Image: http://www.learner.org/interactives/periodic/groups2.html
ALKALINE EARTH METALSGroup 2MetalsSolids at room
temp2 electrons in the
outer shellWhite, silvery,
and malleableReactive, but less
than Alkali metalsConduct
electricity
TRANSITION METALSMetalsAlmost all are
solids at room temp (Hg)
Good conductors of heat and electricity.
1 or 2 Valence Electrons
Less Reactive than Alkali and Alkaline Earth
Can bond with many elements in a variety of shapes.
BORON FAMILY Group 33 electrons in
the outer shellMost are metalsBoron is a
metalloidReactiveSolid at room
temp
CARBON FAMILY Group 44 electrons in the
outer shellContains 3
metals, 2 metalloids, and 1 non-metal Carbon (C)
Reactivity variesSolids at room
temp
NITROGEN FAMILY Group 55 electrons in the
outer shellCan share
electrons to form compounds
Contains 2 metals, 2 metalloids, and 2 non-metals
Reactivity VariesNitrogen is the
only gas at room temp, rest are solids
OXYGEN FAMILY Group 66 electrons in
the outer shellContains 2
metals, 1 metalloid, and 3 non-metals
ReactiveOxygen is a gas,
the rest are solids at room temp
Noble GasesGroup 8Exist as gasesNon-metals8 electrons in the
outer shell = FullHelium (He) has
only 2 electrons in the outer shell = Full
Not reactive with other elements
HalogensGroup 77 electrons in the
outer shellNon-metals,
Uus is unknownVery reactive -
are often bonded with Group 1 Alkali Metals
Has 2 gases, 1 liquid (Br), and 2 solids
Rare Earth MetalsSome are
RadioactiveThe rare
earths are silver, silvery-white, or gray metals.
Conduct electricity
Also called Lanthanides and Actinides