Radioactive
What does it mean to be radioactive
To be radioactive is to give off radiation
Which of the following is not an isotope of hydrogen
Tritium Deuterium Protium Quatrium
What is does going nuclear mean
To behave in an unrestrained manner
What is half-life
The half-life of a reaction (t1/2 t 1 / 2), is the amount of time needed for a reactant concentration to decrease by half compared to its initial concentration. Its application is used in chemistry and medicine to predict the concentration of a substance over time.
What causes radioactive decay
The change from an unstable atom to a stable atom while seeking a lower energy level
What is isotopes
What are 3 major nuclear accidents
Fukushima nuclear disaster (2011), the Chernobyl disaster (1986), the Three Mile Island accident (1979) and the SL-1 accident (1961)
How to solve for half-life in chemistry
The equation for half-life is T 1 / 2 =ln (2)y, where T 1 / 2 is the half-life and y is the decay constant, which is a value specific to each chemical. Half-life follows exponential decay because half-life involves multiplying the remaining quantity by the same number repeatedly.
What is radiation
Energy given off by an unstable (isotope) is radiation
Isotopes of a given element differ in the number of
A Neutrons
B Protons
C Electrons
D Photons
What are 3 main uses of nuclear energy
Medical Diagnosis and Treatment
How many half-lives will take for 50 g of te to decay to 6.25 g
Half-life is the time required for any substance to reduced to its half amount. Therefore it will take three half-lives for 50 g of 99T to decay to 6.25 g
Name the 3 main types of radiation
Alpha, beta and gamma
What is the most common isotope
Oxygen-16
How clean is nuclear power
zero-emission clean energy source
How long does it take 100.00 g sample of as 81 to decay to 6.25 g
132 seconds
Which is the most dangerous type of radiation to humans and why
gamma
How many isotopes are there
339 different isotopes
What is the biggest danger from nuclear waste
radioactive waste
Explain how to find a half-life. Provide an example.
in physics and chemistry, the term half-life refers to the amount of time required for a substance to decay into half of its original value. For example, the half-life of Carbon 14 is approximately 5730 years. This means that if we initially have 100 Carbon 14, that amount would be reduced to 50 after 5730 years have passed.