Parts of the Periodic Table
What are the columns called on the periodic table?
Groups
What cannot be separated into simpler materials by a chemical reaction?
What is literally picking the pieces apart and separating them?
Manual separation
What is the formula for the mass number of an atom?
Protons + neutrons
What does the mass number represent?
Number of protons + number of neutrons
What are the rows called on the periodic table?
Periods
What is a pure substance that contains two or more kinds of atoms?
A compound
Filtration
What is the formula for determining the number of neutrons in an atom?
Mass number - number of protons
Average atomic mass is given in what units?
AMU (atomic mass units)
Where are the metals located of the periodic table?
The left
What is composed of two or more elements NOT chemically combined?
A mixture
What is the process of separating a mixture based on the boiling points?
Distallation
What is the relationship between protons and atomic numbers?
Atomic numbers are the same as the protons
What are the average atomic masses given on the periodic table?
Weighted averages
Where are the nonmetals located on the periodic table?
The right
What is carbon?
An element
What is the separation technique when you carefully pour of a liquid from a mixture containing both a solid and a liquid?
Decantation
Where is most of the mass located in an atom?
In the nucleus
Without doing any math, are there more Bromine-79 atoms or more Bromine-80 atoms on earth? (Hint - Bromine's atomic mass is 79.904)
Bromine-80
What is the staircase of elements called?
Metalloids
What is table salt?
A compound
What is the separation of a mixture in which the components move at different rates?
Chromatography
What are atoms that have the same number of protons but different numbers of neutrons/mass numbers?
Isotopes
Silicon has three naturally occurring isotopes: Si-28, Si-29, and Si-30. If the average atomic mass of silicon is 28.09, which isotope has the highest isotopic abundance?
Si-28