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Periodic Table 1
This stack will introduce you to the characteristics of the periodic table
Term | Definition |
---|---|
Periodic Table | a list that shows the chemical elements arranged according to their properties |
Groups/Family | a vertical column on the periodic table |
Periods | name given to a horizontal row of the periodic table |
Electrons | subatomic particle with a negative charge and located outside the nucleus |
Element | composed of one kind of atom that have the same atomic number |
Metals | An element below and to the left of the stair-step line of metalloids; about 80% of the known elements are metals. |
Non-Metals | An element above and to the right of the stair-step line of metalloids. Are not able to conduct electricity or heat very well. |
Metalloids | An element with properties of both metals and nonmetals located along the stair-step line on the right side of the periodic table. |
Ductile | the ability to be stretched into a thin wire |
Malleable | the ability to be hammered into a thin sheet |
Insulator | a material that allows little or no heat, electricity or sound to go into or out of something |
Conductor | A material that let electrical currents to pass through |
endothermic reaction | A chemical reaction in which heat energy is absorbed. |
exothermic reaction | A chemical reaction in which heat energy is given off. |