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BC Science 9 Ch2

BC Science 9 Chapter 2

International symbol for each element chemical symbol
Most elements are derived from ________ words Greek
Describes a substance's ability to react chemically with other substances to form new products chemical properties
Are typically hard, shiny, malleable, ductile and good conductors of heat and electricity metals
Are typically gases or brittle solids at room temperature non-metals
Makes up over 90% of the atoms in the universe and is highly reactive hydrogen
Mixed with carbon to make steel iron
Most rocks are made up of this gaseous element plus other elements like silicon, iron, and aluminum oxygen
Very reactive alkali metal; also found in table salt sodium
Deadly pale yellow gas chlorine
Liquid at room temperature; is poisonous mercury
Used in computer chips silicon
'Pop Test'is testing for this element hydrogen
Creator of the modern periodic table Mendeleev
The number of protons in the atom of an element atomic number
Mass of an average atom of an element atomic mass
Atomic mass is measured in these units atomic mass units
An electric charge that forms on an atom when it gains or loses an electron ion charge
Separates metals and non-metals on the period table metalloids
Found to the left on the periodic table metals
Found to the right on the periodic table non-metals
Vertical columns on the periodic table chemical families
Groups of elements that have similar physical and chemical properties chemical families
Highly reactive family, particularly with oxygen and water alkali metals
Family of metals that will burn in air if heated alkaline earth metals
Highly reactive family consisting of gases, a liquid, and a solid halogens
Most stable and unreactive family Noble gases
Diagram that shows the electron arrangement around the nucleus Bohr model
Region surrounding the nucleus of an atom electron shell
Maximum number of electrons in the first electron shell two
Maximum number of electrons in the second electron shell eight
The outermost electron shell valence shell
Electrons in the outermost electron shell valence electrons
In a Noble gas the valence shell is said to be this full
To become a positive ion, an atom must do this lose an electron
To become a negative ion, an atom must do this gain an electron
Metals form this type of an ion positive
Non-metals form this type of an ion negative
Created by: darrinaustin