Nuclear Chemistry Review

Atoms that have unstable nuclei and will change into a different atom are said to be:

• fluorescent

• isotopes

• radioactive

• colorful

Alpha particles have ______ charge.

• positive

• negative

• no

the identity of an element is determined by its number of ...

• electrons

• neutrons

• protons + neutrons

• protons

atoms of the same element with different masses are called:

• isotopes

• radioactive

• semiconductors

• transuranium

which radiation has the poorest penetration?

• alpha particles

• beta particles

• gamma rays

a beta particle is a/an:

• electron

• helium nucleus

• proton

• hydrogen nucleus

which radiation can be stopped by a piece of metal foil?

• alpha particle

• beta particle

• gamma ray

• x-ray

the product of a decay reaction has a mass that has decreased by 4. What type of decay occurred?

• gamma decay

• fusion

• alpha decay

• beta decay

the product of a nuclear decay did not change mass or atomic number. What type of decay occurred?

• fusion

• alpha decay

• gamma decay

• beta decay

The changing of one element into another by a nuclear reaction is called:

• transmutation

• transuranium

• decomposition

• combustion