Periodic Vocabulary 1
Tiny indivisible particle that makes up matter
What is an Atom?
Column of elements in periodic table that have similar properties, electron configurations and valencies
Group
Characteristic of a metal, means it is bendable, easily shaped
Malleable
First and lightest element
Hydrogen
Metals that react with water for form alkaline solutions
Alkali Metals
Region around the nucleus of an atom, which cannot be broken down by chemical reaction to form a simpler substance
Number of protons in the nucleus of an atom
Atomic Number
Class of elements typically forms negative ions; usually dull solids or gases.
Nonmetal
This group is good for filling balloons, deep sea divers, signs
Noble Gases
Elements in Group II, Magnesium and Calcium are part of this metals group
Alkaline-earth metals
Substance that consists of a combination of different elements
Compound
Group of metals soft and weak
Poor Metal
Only conducts electricity in certain circumstances
Semiconductor
Typically Shiny and Hard, good conductors of electricity.
What are metals?
Most common element found on earth, used in the kitchen
Aluminum
Substance made up of one type of atom, which cannot be broken down by chemical reaction to form a simpler substance
Element
Avereage mass number of the atoms in a sample of an element
Atomic Mass
Two electrons in outer shell
Group II elements
All hard, tough, shiny, Malleable, typically conduct heat and electricty
Transition Metals
Colorless, odourless, Non reactive. What Group and why non reactive?
Noble Gases - Group 8- Octet
Set of elements that have the same number of electron shells, shown as rows in the periodic table
Period
Group of elements that have characteristics of metals and nonmetals.
Semimetal
Elements that are not distinct metal or non-metal
Metalloids
The man who published the Basis for the modern Periodic Table
Dimitri Mendeleev
Solid, liquid or gas, mainly non shiny
Non-metal