Card Set Information
The smallest part of an element that retains the identity of the element.
The number of protons in the nucleus of an atom.
Any of the elements occupying Group 1 of the periodic table.
Alkali Earth Metal
Any of the elements occupying Group 2 of the periodic table.
A model of the atom in which a central positive nucleus is surrounded by electrons in energy levels.
A negatively charged particle within the atom.
Areas of space surrounding the nucleus of an atom that electrons occupy.
A vertical column of elements in the periodic table.
Any of the elements occupying group 17 of the periodic table.
One of two or more forms of an element that have the same number of protons but a different number of neutrons.
The sum of of the number of protons and neutrons in the nucleus.
Typically an element that is hard, shiny, malleable,and ductile, and is a good conductor of heat and light.
An element that shares some properties with metals and some properties of non-metals.
In chemistry, the positively charged centre of an atom.
An uncharged particle that is part of almost every atomic nucleus.
Typically, an element that is not hard, shiny, malleable,and ductile, and is a poor conductor of heat and light.
Any of the gaseous elements occupying Group 18 of the periodic table.
A positively charged particle that is part of every atomic nucleus.
A system for organizing the elements into columns and rows, so that elements with similar properties are in the same column.
A horizontal row of elements in the periodic table.
A particle that smaller than the atom.
An electron in the outermost occupied energy level of an atom.