Atomic Theory
This scientist first came up with the idea of atoms.
Who is Democritus?
This class of elements are shiny, malleable, and conducts heat.
Metals
The number of protons in the nucleus determines this in an element.
What is the atomic number?
This man first organized the Periodic Table as we recognize it today.
Who is Dmitri Mendeleev?
J.J. Thompson's atomic model was named after this British dessert.
What is Plum Pudding?
What are protons?
Bromine and Chlorine belong to this class of elements.
Non-Metals
An atom with 26 electrons will have this many protons.
What is 26 protons?
The Periodic Table is now organized by the number of protons in the nucleus also known as this number.
What is the atomic number?
Rutherford discovered this part of the atom using the Gold Foil Experiment.
What is the nucleus?
Electrons are found in this part of the atom.
What are orbitals or energy levels?
Si and Ge belong to this group and have properties of both metals and non-metals.
metalloids
The atomic mass is calculated using these 2 particles.
What are protons and neutrons?
The majority of elements on the Periodic Table are found in this sub-category.
What are Transition Metals?
This scientist theorized that electrons orbit around the nucleus on set paths.
Who is Niels Bohr?
Protons and neutrons are found in this part of the atom.
What is the nucleus?
what element is a metal that's liquid at room temperature?
mercury
A Carbon atom with an atomic number of 6 and an atomic mass of 12 will have this many neutrons.
What is 6 neutrons?
The vertical columns of the Periodic Table are called this.
What are groups?
What year was the neutron discovered?
1932
What is the outermost orbital/ energy level?
What is special about the lanthanides AND actinides?
They are radioactive and can cause cancer.
How many neutrons are in an element with an atomic mass of 251amu and an atomic # of 98?
153 (Cf)
These elements are found to the left of the zigzag line/ staircase and are solid, shiny, malleable, ductile, conductors.
Metalloids