Atoms Family
What is atomic mass?
The weight of an atom. The total of the protons and neutrons.
Neutrons have a ______ charge.
What is : uncharged/ neutral
As you read the Periodic Table from left to right the atomic mass _______.
A. Increases, B: Decreases, C: Stays the same
What is: A, Increses
What two particles must be equal to form a neutral atom?
protons and electrons
What particle lives in the rings in the Bohr diagram?
Electrons
The positively charged particle in an atom
Proton
Which subatomic particle is not included in the atom's mass?
Electron
Which element has a higher atomic mass, Gold or Silver?
Gold
How many electrons can the first three orbits (rings) hold all together?
What is: 18 electrons
How many electrons are present in a neutral Rubidium atom?
37
The subatomic particles in the nucleus of an atom
Neutrons and Protons
Where are the electrons located?
Electron orbitals or shells
Outside the Nucleus
The number of valance electrons Barium has
2
Except for Hydrogen and Helium, all atoms want this many electrons in the outer ring to be happy.
8
Draw a Helium Bohr Model.
2 electrons drawn on the ring.
In an atom, which has the least mass? A: nucleus B: proton C: neutron D: electron
D, electrons
What type of charge does a proton have?
Positive
What is the symbol for Magnesium?
Mg
Why do we study models of atoms instead of atoms directly?
What is: They are too small
Draw a Bohr diagram for Fluorine.
2 first ring, 7 second ring
What is the atomic number?
The atomic number is the number of protons in an atom.
This is a version of an element with a different number of neutrons.
Isotope
These are the electrons in the outermost shell of an atom.
Valence
Why don't the noble gases want to bond with other atoms?
They have all of the their outer orbits filled.
Draw an oxygen Bohr model.
2 electrons on inside ring, 6 electrons on the outside ring