Which element is the most similar to Nitrogen?
Gold, Phosphorous, Neon, Florine
Phosphorous
100
What does the atomic number represent?
# of protons
200
What is included in the nucleus of an atom?
protons and neutrons
200
What is the charge of an neutron?
it has no charge
200
What is a column of the periodic table called?
a group or family
200
What is special about Elements in a group/family?
They have similar characteristics, properties
200
What does the atomic mass represent?
The average mass of the element which is from the number of protons and neutrons in the atoms nucleus.
300
What particles travel around the nucleus of an atom?
electron
300
What is the charge of an electron?
negative
300
Give 2 reasons why is the periodic table organized the way it is.
-Organized by increasing atomic mass
-Organized by electron configuration
-Organized by the number of protons in the elements atoms
-Organized by the periodically repeating of similar chemical properties between elements.
300
Which element is more reactive? Sodium or Platinum
sodium
300
What four things are included in an element's square?
atomic number, atomic mass, symbol and element name
400
_______ % of an atom's mass is in the nucleus.
99.9%
400
What is the charge of a "happy" atom?
no charge or neutral
400
Which Element has a great atomic mass: Silver or Gold
Gold
400
Which element is more dense (greater atomic mass)? Calcium or Radium?
Radium
400
What is the atomic number, atomic mass and symbol for gold?
Atomic # is 79
Atomic mass is 196.967 or 197
Symbol is Au
500
What other particle of an atom is equal to the number of protons?
electrons
500
How does an atom get an overall neutral charge?
by having the same number of protons as electrons
500
Who figured out the way to organize the Periodic Table and thus is called the father of the modern Periodic Table?
Dmitrii Mendeleev
500
What is the most reactive family on the periodic table?