Atomic Theory
This scientist proposed the plum pudding model of the atom
Who is J. J Thompson
This subatomic particle has a negative charge
What is Electron
This is what the atomic number tell you about an element
What is the number of protons
An isotope
What is Atoms of the same element that have different numbers of neutrons
This type of radiation consists of 2 protons and 2 neutrons
What is Alpha Radiation
This experiment provided evidence that atoms contain a small, dense, positively charged nucleus?
What is Rutherford's gold foil experiment
This is where protons and neutrons are located in an atom
What is the Nucleus
elements in the same group generally have this in common
What is Similar chemical properties and, for main-group elements, the same number of valence electrons
An ion
What is an atom that has gained or lost electrons and has an electrical charge
This type of radiation is a high-energy electromagnetic wave with no mass or charge
What is Gamma Radiation
the main difference between the plum pudding model and the nuclear model?
What is The plum pudding model showed electrons embedded in a positively charged sphere, while the nuclear model showed a small, dense, positive nucleus surrounded by mostly empty space.
The mass number of An atom that has 12 protons, 12 neutrons, and 12 electrons.
What is 24
This group on the periodic table contains the most reactive nonmetals
What is group 17-halogens
The hyphen notation for the most common isotope of hydrogen
What is Hydrogen-1
The main difference between a chemical reaction and a nuclear reaction
What is chemical reactions involve electrons and chemical bonds, while nuclear reactions involve changes to the nucleus.
The main difference between the Bohr model and the electron cloud model
What is the Bohr model shows electrons traveling in fixed orbits, while the electron cloud model shows regions where electrons are most likely to be found.
The two forces that help hold an atom together?
What is Electromagnetic force and strong nuclear force
The difference between a group and a period on the periodic table
What is Groups are vertical columns, and periods are horizontal rows. Elements in the same period have the same number of occupied principal energy levels.
This element has an isotope that has 19 protons and 21 neutrons. write in hyphen form.
What is Potassium-40
The difference between nuclear fission and nuclear fusion
What is fission splits a large nucleus into smaller nuclei, while fusion combines smaller nuclei into a larger nucleus
The reason why scientists have changed their models of the atom over time
What is new experiments and scientific discoveries have provided evidence that improved our understanding of atomic structure.
The identity, mass number, and charge of an atom that has 17 protons, 18 neutrons, and 18 electrons
What is Chlorine-35 with a -1 Charge
This element is in Period 2, has 6 valence electrons, and is classified as a nonmetal.
What is Oxygen
The element, mass number, and charge of an atom that has 13 protons, 14 neutrons, and 10 electrons.
What is Aluminum-27 with a +3 charge
The amount of a radioactive isotope you will have remaining of an 80 gram sample after 30 years is the isotope has a half-life of 10 years.
What is 10 Grams