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Science Notes
Grouping the Periodic Table
Question | Answer |
---|---|
Groups are ___ on the Periodic Table. | columns |
Groups are also known as ______. | families |
Group one is known as the ________ ________. | Alkali Family |
Alkali Family is the most________________. | reactive group of elements |
Alkali elements are never found___________ ________. | naturally uncombined |
Most important elements in the Alkali Family are | Sodium and Potassium |
Group 2 is the __________ ________. | Alkaline Family |
Most important elements in the Alkaline Family are ____________. | Calcium and Magnesium |
Groups 3- 12 are known as ________. | Transition Metal Family. |
Transition Metals form a bridge between __________ to the ______________. | not very reactive elements to the non- reactive elements |
The bridge between this two also connects __ to __. | metals to non- metals |
Most familiar elements in this group are _______. | Aluminum, Iron, Copper, Mercury, Gold, and Nitrogen |
Group 13 is the ___. | Boron Family |
Group 14 is the ___. | Carbon Family |
Group 15 is the _____. | Nitrogen Family |
Group 16 is the___. | Oxygen Family |
Group 17 is the ____. | Halogens |
Group 18 is the __. | Noble Gases |
Groups 13 thru 16 ______. | have a zigzag line thru them which separate the metals and non metals |
Along the zigzag line are _______. | metals, non-metals, and metalloids |
Some elements from period 6 + 7 are _______. | separated from the table and placed at the bottom of the table |
The reason the selected elements were moved was to _______. | keep the table from being to wide |
Names of the two rows at the bottom of the periodic table. | lanthnides and actinides |
The separated two rows are also known as ______. | Rare Earth Metals |
Lanthanides are _______. | used to make alloys. |
Actinides __________. | exist in small amounts. |
_______ is an actinide which is used in nuclear power plants. | Uranium |
Uranium is a _________ element. | radioactive |
All elements after uranium are ___________. | synhetic |
Synthetic equals | man- made |
To be classified as a metal on the periodic table it must have 3 characteristics: | malleable, ductile, conductive |
material which can be hammered into a sheet | malleable |
material that can be pulled into a wire | ductile |
conductor of electricity | conductive |
K means in Latin... | (pottasium)kalium- ashes |
Pb means in Latin... | (lead) plumbum |
Au means in Latin... | (Gold) aurium |
Hg in Latin means... | (mercury) hydrogurum- liquid silver |
Ag in Latin means... | (silver) argentum |
Cu in Latin means... | (copper) cyprium- found on the island Cyprus- natrium |
Fe in Latin means... | (iron) ferrum |
The 2 in H2O is called a _. | subscript |
The 4 in 2^4 is called a _. | superscript |
A diatomic molecule is __________. | always found in pairs |
bridge from metals to non- metals | Transition Metals |
Other metals are ________________. | solid and dense like Al, Tin, and Lead |
List the Noble Gases in order: | Helium,Neon, Argon, Krypton, Xenon, Radon |
List the Noble Gas's elements in order | He, Ne, Ar, Kr, Xe, Rn |
Na in Latin means... | (sodium) natrium |
elements that lack most of the properties of metals | nonmetals |
There are ___ nonmetals each located to the __________ of the zigzag line. | 17; right |
In general, the physical properties of non metals are ______ to those that characterize the metals. | opposite |
molecules of two identical atoms | diatomic molecule |
Name two other diatomic molecules besides O2. | H2, N2 |
Why is hydrogen a separate group from the rest? | Hydrogen's chemical properties are so different from the other elements, because it has one proton and one electron. |
What is the most useful property of the metalloids? | They have a varying ability to conduct electricity |
substances that under some circumstances can carry electricity, and under some circumstances, cannot | Semi- conductors |
Semi-conductors are used to make... | computer chips, transistors, and lasers |