Definitions
What subatomic particles are found within the nucleus?
Protons and neutrons
What are the three nuclear decay processes called?
Alpha
Beta
Gamma
What number goes on the top left hand corner of an isotope symbol?
Mass number
How many beta decay reactions must Polonium-209 undergo to become Astaline-209?
1.25 g
An element with the same number of protons but different number of neutrons
Which nuclear particle can cause damage to matter
Gamma particle
What number goes on the bottom left hand corner of an isotope symbol?
Atomic number (number of protons)
True or false: In a balanced nuclear decay equation, the mass number of the reactants must equal the sum of the mass numbers of the products
TRUE
What fraction of a radioactive isotope will remain after 3 half-lives?
1/8
An alpha particle loses what during nuclear decay?
two protons and two neutrons
Which nuclear particle is large and positively charged?
Alpha particle
Draw the isotope symbol and write the isotope name for the element that has 88 protons and 138 neutrons
Draw isotope symbol on board
Radium-226
How many alpha decays must Th-239 undergo to become Po-227?
3 alpha decays
A sample of Francium-212 has decayed to 1/4 of its original amount in 40 minutes. What is the half-life?
20 minutes
A beta particle loses what during nuclear decay?
An electron
What is the symbol associated with each nuclear decay process
Show answer on board
What is the mass number and atomic mass of an element that has 90 protons and 140 neutrons?
Mass number is 230
Atomic mass is 232.04
How many beta decays must Radium-230 undergo to become Th-230?
2 beta decays
What nuclear process takes place in the sun and stars?
Fusion
A gamma ray loses what during nuclear decay?
Energy waves or photons
List each nuclear decay process from weakest strength to strongest strength
1. Alpha particle (stopped by a piece of paper)
2. Beta particle (Stopped by 3mm of aluminum or 10mm of wood)
3. Gamma ray particle (Stopped by 60cm of aluminum or 7 cm of lead)
List the number of protons, electrons, neutrons, mass number, isotope symbol, and isotope name for Titanium-50.
Protons:22
Electrons: 22
Neutrons: 28
Mass number: 50
Isotope symbol: on board
Isotope name: Titanium-50
In addition to Uranium-235 going through 4 alpha decays and 3 beta decays, how many gamma decays will it undergo to reach the final product, Fr-219?
Any answer is possible
Fission