Radioactivity

Contrast alpha beta and gamma decay

Alpha has greater charge/mass but less penetrating powers and beta have -1/+1 charge and no mass but more penetrating powers.

Recognize the contributes made byBecquerel and Curie to knowledge and radioactivity

Becquerel and Curie contributed to knowledge and radioactivity by discovering radioactivity and radioactive decay.

Gamma Decay

Light with high energy(best penitrating)

Discuss dangers associated with radioactivity

Radiation sickness, weaken metal, damage spacecrafts, damage within matter, damage on the surface and damage just below the surface.

Discuss helpful uses of radiation

Smoke detectors, tracers, diagnose illnesses treat illnesses, prevent illness, sterilize food, detect defects in buildings and structures, space probes.

Radioactivity

The process by which an unstable nucleus gives off nuclear radiation

Radioactive Decay

The process where some nuclei give off nuclear radiation.

Alpha decay

The release of alpha particles: 2 protons/neutrons

Radioactivity sickness

Too much exposure to radiation(fatigue, loss of appetite, hair loss, destruction of blood cells, cancer and death)

Henri Becquerel

While trying to study X rays Becquerel discovered radioactivity.

Describe the penitrating abilities of nuclear radiation

alpha has the least penetrating ability and can be stopes by clothes, beta has more penetration than alpha and is stopped by aluminum and gamma has most penetration and is stopped by concrete.

Describe how nuclear radiation affects atoms and chemical bonds

break chemical bonds, give up electrons and damage atoms

Nuclear radiation

energy given off a radioactive material as it decays

Fluorescent Minerals

respond to UV light by glowing

Beta decay

the release of beta particles; electron or positron

Marie Curie

worked with Becquerel and named radioactivity and radioactive decay.