Vocab 1
particles with an electrical charge of 1-
electron
Number that is equal to the number of protons in an atom
atomic number
the vertical columns in a periodic table
groups
In the elements box, what information is found at the bottom.
the atomic mass
How many periods are there in the periodic table
7
particles with an electrical charge of 1+
proton
What is the mass number?
sum of protons and neutrons in the nucleus
the horizontal rows on the periodic table
periods
Where are the nonmetals located
to the right of the staircase shape: metalloids
List 2 types of information given in a box on the periodic table?
AMU, Atomic Number, Element Symbol
positively charged center of the atom
nucleus
atoms of the same number that have different numbers of neutrons
isotopes
the elements are arranged by increasing atomic number and by changes in physical and chemical properties
periodic table
Where would you find the atomic number for the elements
above the element name, example: Sodium is 11
How many electrons can the d sub orbital hold?
10
define neutron
neutral particles that do not have an electrical charge
define quark
the smaller particles that make up protons and neutrons
define electron dot diagram
the symbol of the element and dots to represent the electrons in the outer energy level
What is the shape of the group of metalloids
staircase
How many electrons can the fourth orbital hold?
32
define atom
smallest piece of matter that still remains the property of an element
What is the average atomic mass
weighted average of mass of the mixture of the isotopes
define electron cloud
the area around the nucleus of an atom where its electrons are most likely found
What sub orbital is the groups III through XII
sub orbital d
Compare chlorine-35 and chlorine-37 isotopes.
Chlorine-35 has 17 protons and electrons and 18 neutrons. Chlorine-37 has 17 protons and electrons and 20 neutrons