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Periodic Elements

Study for this very important quiz on 20 periodic elements

TermDefinition
Magnesium grayish-white, fairly tough metal
Helium an unreactive, colorless, and odorless gas
Iron a silvery, lustrous metal which has important magnetic properties, very reactive chemically
Sodium a soft, bright, silvery metal, highly reactive
Silicon blue-gray, second most abundant element on the surface of the Earth
Oxygen gas is colorless, odorless, and tasteless, very reactive, essential for respiration of all plants and animals and for most types of combustion
Calcium gray silvery metal, hard, an essential constituent of leaves,bones, teeth, and shells
Mercury The only metal that is liquid at room temperature, heavy,silvery metal
Carbon highly stable, requiring high temperature to react even with oxygen, physical properties of it vary. This forms more compounds than any other element, common to all living things
Boron has properties which are borderline between metals and non-metals (semi-metallic) is a semiconductor
Hydrogen the lightest element, most abundant element in the universe, makes up about 90% of the universe
Lithium the least dense metal. A freshly cut chunk of it is silvery
Nitrogen Colorless, odorless, 78% of Earth's atmosphere
Chlorine Poisonous, greenish yellow gas which combines directly with nearly all elements
Flourine most reactive of all elements, is a pale yellow, corrosive gas, which reacts practically all organic and inorganic substances
Aluminum silvery-white metal, is light, nontoxic (as the metal), non-magnetic and non-sparking
Argon colorless and odorless gas present to a very small extent in the atmosphere, is inert
Sulfur a pale yellow, brittle solid, which is insoluble in water
Potassium one of the most reactive and electropositive of metals, soft and easily cut with a knife, silvery in appearance
Phosphorus waxy white solid, is colorless and transparent, is insoluble in water
Created by: aa28772
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