Isotopes
Method of finding atomic mass from all isotopes from an element. x 2
What is weighted average.
This shrinking trend is a result of addition of protons in an energy level.
What is atomic radius?
Atomic particles in a close confined positive environment.
What are protons and neutrons?
This discovery was made by J J Thomson with the cathode ray tube experiment. x 3
What is an electron?
This is the most common mixture that anyone comes in contact with.
What is air?
This type of radioactive decay is equivalent to the nucleus of a helium atom.
What is an alpha particle?
When instability is present in an atomic nucleus, this type of decay occurs.
What is radioactive decay?
Experiment used by Rutherford to discover the dense positive nucleus and electrons in empty space. x 4
What is the Gold Foil Experiment?
This is the two word description of the area of the smallest atomic radius on the entire periodic table.
Top right.
This person theorized that all atoms of a single element are identical as part of his atomic theory?
Who was Dalton?
The variation of this subatomic particle is the reason for different isotopes. x 3
What are neutrons?
This is the term that is a measurement half way across an atom.
What is atomic radius?
The word atomos was used by this scientist to describe not divisible. x 2
Who was Democritus?
It is in this direction that the atomic radius increases in all groups.
What is down?
This tool puts discoveries of events in chronological order.
What is a timeline?
The isotopes for Titanium are Ti-46, Ti-47,Ti-48, Ti-49, and Ti-50. What makes each of these isotopes alike? x 2
What is the number of protons?
This term refers to the trend of atomic radii across a period. x 2
What is decreasing?
This consistent arrangement of elements in order and repeating characteristics was designed by Mendeleev.
What is the periodic table?
This color almost makes it almost impossible to identify extremely hot glass.
What is clear?
It is for this reason that a large nucleus might lose an alpha particle from the nucleus.
What is stability of the nucleus?
To determine the number of neutrons in an atom from the periodic table, knowledge of the mass number and the number of this particle.
What is protons?
Calculation acquired by dividing a mass portion of a chemical formula by the total mass of a formula.
What is percent composition?
This physicist developed a model that consisted of circular orbitals illustrating different levels of energy. x 3
Who was Neils Bohr?
The term for settling of particles in a heterogeneous mixture. x 2
What is precipitate?
These two forces are present in the tug of war or push-pull that results in protons being held in a dense positive nucleus. x 2
What are electromagnetic and nuclear forces?