Basic Scientific Principles
large particles with no net charge & located in the nucleus
neutrons
What are the ROWS and COLUMNS of the periodic table called?
Rows - period
Columns - Groups
______ is the speed at which a chemical reaction occurs
Chemical Reaction Rate
How do you pronounce Al2O3
Aluminum oxide OR dialuminum trioxide
Elements combine with other elements to form ______
Compounds
The atomic number is the number of _______ in an atom
protons
____ are a combination of elemental symbols and subscript numbers used to show the composition of a compound
Chemical formulas
How do you pronounce CO2
carbon dioxide
In a _____ bond, each atom equally shares the combined electrons
covalent
The columns, or groups, are also known as
families
Chemical formulas have a charge sum of:
Zero
How do you pronounce N2O
dinitrogen monoxide
_____ compounds are neutral and from between METALS & NON-METALS
Ionic
Groups are elements which have the same number of _______ in the outer orbitals
electrons
_____ increase reaction rate by lowering the amount of energy needed for a reaction to occur
Catalysts
How do you pronounce Cl2O7
dichloride heptoxide
An ion with a positive charge
cation
The _____ consists of 15 naturally occurring elements and have ONE radioactive element
lanthanide series
What are the 3 factors that affect reaction rate
Concentration
Temperature
Pressure
100 Na+1 + Cl --> __ NaCl + __ Na+
100 Na+1 + Cl --> NaCl + 99 Na+