Atomic Theory
Three subatomic particles that make up an atom
What are electron, proton, neutron
Isotopes all have the same # of this
What are protons
Atoms gain or lose charges to have electron structures similar to these elements
What are noble gases or stable elements
Five types of radiation
What are alpha, beta, gamma, positron emission, and electron capture
This is the name of the positively charged ion
What is cation
Earth, wind, fire, and water were believed to be the basis of matter according to this man
Who is Aristotle
Mass numbers are made up of
What are protons and neutrons
S2- has had this change to its number of electrons from its parent ion
What is gained 2 electrons
Radiation that accompanies most alpha decays
What is gamma
The process or results of joining two or more thing together to form a single entity
What is fusion
Gold foil experiment conducted by Rutherford proved this
What is a positive, dense nucleus in the center of atoms
Give the identity and the number of neutrons from the following isotope symbol:
7835 X
What is Br and 43
The name of an atom with equal protons and electrons
What is Neutral
Radioactive decays that produce protons from neutrons (two of them)
What are positron emission and electron capture
What is 22?
The incorrect model of the atom was named after this English dessert
What is Plum Pudding
How many neutrons are in Cadmium - 112
What is 64
The ion Calcium exists as
What is Ca2+
The amount remaining of 64.0g of Uranium left after 35 years if its half-life is 7 years
What is 2 g
Smoke detectors beep when smoke is present due to this reason
What is electrical circuit is not as strong due to less radioactive emission in the smoke detectors
Negatively charge particles deflecting in a cathode ray tube proved the existence of electrons through
What is the mass - charge ratio being far less than that of a hydrogen atom
The element from calculating the Average Atomic Mass from:
20 amu, 90%
22 amu, 10%
What is Neon
Pb4+ and N3- form this ionic compound (formula and name)
What is lead nitride, Pb3N4
23892U ----> 42He + ?
What is 23490Th
Name five famous scientists discussed during this unit
Who are...