Show:
Scientists
Organization
Groups
Elements
100
This scientist created a model that represented atoms as "billiard balls."
Who is John Dalton?
100
This man organized the periodic table based on atomic number.
Who is Dmitri Mendeleev?
100
This group is the most reactive.
What is the alkali metals? (group 1)
100
These elements are shiny and conduct electricity.
What is the metals?
200
This scientist created an atomic model known as the "Plum Pudding" model.
Who is J.J. Thomson?
200
This number tells you how many protons and electrons are in an atom.
What is the atomic number?
200
This group includes common metals, such as calcium and magnesium.
What is the alkaline earth metals?
200
These elements are dull, brittle, and do not conduct electricity.
What is the non-metals?
300
This guy used gold foil to determine that atoms are made up of 99.9999% empty space.
Who is Ernest Rutherford?
300
This number tells you how much an atom of an element weighs.
What is the atomic mass?
300
This group of royal snobs won't react with anyone.
What is the noble gases?
300
These elements are found along the staircase that separates the two main types of elements.
What is the metalloids?
400
This scientist designed a model that contained electron shells or orbitals.
Who is Niels Bohr?
400
These are the horizontal rows of the Periodic Table.
What are periods?
400
From the Periodic Table song: "This is the Periodic Table, noble gases stable, _____________ and alkalis react aggressively. (HINT: group 17)
What is the halogens?
400
This is the first element on the Periodic Table.
What is hydrogen?
500
This scientist helped contribute to the "Electron Cloud" model of the atom, but it famous for his cat.
Who is Erwin Schrodinger?
500
These are the vertical columns of the Periodic Table.
What are groups or families?
500
These elements are written underneath the table. (two rows, not groups)
What are the lanthanides and actinides?
500
Lithium has an atomic number of 3 and an atomic mass of 7. How many protons, electrons, and neutrons does an atom of lithium contain?
Protons: 3, Electrons: 3, Neutrons: 4