Atomic Structure
Reading the PT
Facts about the PT
p, n, & e
Metals, Non-metals and Metalloids
History
100
Where do the electrons hangout?
In the electron cloud
100
How does the atomic number on the Periodic Table - move left to right?
smallest to largest
100
On a periodic table, what do rows represent
Each row indicates how many rings/shells an atom has.
100
An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?
125
100
What is the largest group on the periodic table?
Metals
100
The first scientist to describe that electrons move
Neils Bohr
200
Where are the protons found?
Inside the nucleus
200
What is mass number (atomic mass)
Number of protons and neutrons
200
All the elements on the periodic table increase in atomic mass from left to right
No, there is one location it does not increase
200
What is the number of Neutrons located in this element? Round if necessary.
12 neutrons.
200
What are 3 physical properties of metals?
luster, malleable, ductile, good conductors, donate electrons, high density, high melting point
200
He was the first person to discovery the electron
Joseph John Thompson
300
Where are the neutrons found?
Inside the nucleus
300
What two elements are liquids at room temperature?
Mercury and Bromine
300
How many metalloids are there on the PT?
7
300
What does the atomic number tell you about an element?
The number of protons and electrons.
300
What are three physical properties of non-metals?
not shiny, not malleable (brittle), not ductile, poor conductors (good insulators), gain electrons, low density, low melting point
300
Erwin Schrödinger and Werner Heisenberg helped scientists discover that electrons
are located in the electron cloud
400
What is smallest atomic particle?
Electrons
400
What are the 3 parts of an atom
Protons, electrons, and neutrons
400
On the periodic table what do the rows represent?
The number of energy levels (rings each element has)
400
Why don't the English names and symbols match?
The names come from Latin and Greek words and the symbols where kept the same but the name was translated.
400
What group does Hydrogen belong to?
Non-metals
400
Most of the mass from an atom is located
in the nucleus
500
Why do the electrons not fly out of the electron cloud?
The electrons are attracted to the protons in the nucleus. (positive charge is attracted to the negative charge)
500
Where is the smallest element and largest element located and name them both?
Smallest is the upper left corner (H) and the largest is the bottom right corner (Og)
500
What are the only 2 liquids on the periodic table?
Bromine and Mercury
500
What is the least reactive family on the Periodic Table? Also, name what column number.
Noble Gases, Col. 18
500
The elements on the very bottom of the periodic table belong to which group (metals, non-metals or metalloids)?
metals
500
What is the charge of the nucleus? Why... how do you know?
Positive, because protons are positively charged and neutrons and neutral