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Science Atoms Review
science atoms review for test 3-22-11
9
Science
8th Grade
03/21/2012

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Term
Alkali Metals
Definition
Metal/metalloid/non-metal

Reason for Name: when metals are in water, they dissolve and produce alkali.

All elements: Lithium, Sodium, Potassium, Rubidium, Caesium, and Frankium.

Characteristics: Metal, silvery, decomposes in water, produces alkali.
Term
Alkaline Earth Metals
Definition
Metal/metalloid/non-metal

Reason for name: Slight solubility in water.

All elements: Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium.

Characteristics: Very reactive, silver, not freely in nature, softer, stronger, and high boiling.
Term
Lanthanides/ Actinides
Definition
Metal/metalloid/non-metal

Reason for name: It’s a metal compound.

All elements: Scandium, Yttrium, Lutetium, and Lawrencium.

Characteristics: Silvery/white/grey, high luster, high electric conductivity, they are hard to separate; usually found in Monazite.
Term
Transition Metals
Definition
Metal/metalloid/non-metal

Reason for name: Describes the elements now known as the d-block.

All Elements: Copper, Nickel, Cobalt, Chromium, Titanium, Vanadium, Manganese, Zinc, Palladium


Characteristics: Hard, shiny, malleable, good conductors of electricity, colorful compounds. Less reactive than Alkali Metals and Alkaline Earth Metals.
Term
Boron Family
Definition
Metal/metalloid/non-metal (Only boron is a metalloid)

Reason for name: Boron is first of the column.

All elements: Boron, Aluminum, Gallium, Indium, Thallium, and Ununtrium.

Characteristics: Soft, reactive, at moderate temperature, and stable.
Term
Carbon Family
Definition
Metal/metalloid/non-metal

Reason for name: Carbon is on top of the column.

All elements: Carbon, Silicon, Germanium, Tin, Lead, and Ununquadrium.

Characteristics: Can form bonds, most have 4 electrons, fairly reactive.
Term
Nitrogen Family
Definition
Metal/metalloid/non-metal

Reason for name: Nitrogen is on top of the column.

All elements: Nitrogen, Phosphorus, Arsenic, Antimony, Bismuth, and Ununpentium.

Characteristics: 2 neutrons, 3 protons, 5 electrons on outermost ring, moving down in the nitrogen family, the radius increases.
Term
Noble Gases
Definition
Metal/metalloid/non-metal

Reason for name: Non - reactive

All elements: Helium, Neon, Argon, Krypton, Xenon, and Radon.

Characteristics: Light, gases, at room temperature, non- reactive, low boiling points.
Halogen Family
Term
Halogen Family
Definition
Metal/metalloid/non-metal

Reason for name: Named for salt/sea.

All elements: Fluorine, Chlorine, Bromine, Iodine, and Astatine.

Characteristics: -Are found in the rocks of Earth's crust and dissolved in sea water. Electrons and have positive oxidation states. Are reactive, with fluorine being the most reactive of all nonmetals.
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