Subatomic Particles
What are the 3 subatomic particles?
Protons, Neutrons, and Electrons
What does the atomic number tell us about an element?
The number of protons (and electrons assuming it is in a neutral state)
Which two subatomic particles combine to give us the atomic mass of an element?
Protons and Neutrons
What is the scientific name for the rows of the periodic table?
Periods
What is the scientific name for the columns of the periodic table?
Group (or family)
Which subatomic particles have a mass of 1 amu?
Protons and Neutrons
Which element has 15 protons?
Phosphorus (P)
Which element has a mass of 52?
Chromium (Cr)
Where are metals found on the periodic table?
Left of the "staircase"
What is the name of the periodic table family found in group 2?
Alkaline Earth Metals
Which subatomic particle is considered "massless" because it is so small?
Electrons
How many electrons are in a neutral atom of Xenon?
54
How many neutrons are there in an atom of Bromine?
45
Which family contains the most elements?
Transition Metals
Which family does Hydrogen belong to?
Nonmetals
Where are electrons located within an atom?
Outside the nucleus in orbitals/shells
How many protons are in an atom of Barium?
56
Which element has no neutrons?
Hydrogen (H)
What do elements in the same period have in common with each other?
They all have the same number of electron orbitals/shells
What do elements in the same group have in common with each other?
Same # of valence electrons (or same # of "open space" in their outer shell)
Which subatomic particle has a negative charge?
Electrons
How many protons are in 2 atoms of Pb?
164
Which element has 61 neutrons?
Silver (Ag)
A mystery atom has 3 electron shells and 4 valence electrons. What element is this?
Silicon (3rd row, 4th from the left)
Fluorine (Halogens = column 17 and "lightest" means lowest mass)