Chemistry Quiz, Section 20

Which type of radiation can be stopped with something as thin as a sheet of paper?

• alpha

• beta

• gamma

• none of these

Gamma rays are

• high-energy protons.

• low-energy electrons.

• high-energy electrons.

• high-energy electromagnetic waves.

Alpha decay makes an element’s atomic number

• decrease by one.

• decrease by four.

• increase by one.

• decrease by two.

Alpha decay makes an element’s mass number

• decrease by one.

• decrease by four.

• increase by one.

• decrease by two.

Gamma decay makes an element’s atomic number

• decrease by one.

• stay the same

• increase by one.

• decrease by two.

Electron capture makes an element’s atomic number

• decrease by one.

• stay the same

• increase by one.

• decrease by two.

What term was coined by the Curies for the spontaneous emission of penetrating rays from the nuclei of atoms?

• radio wave

• X-ray

• radioactivity

• electromagnetic wave

keeps the mass number the same, reduces the atomic number, and produces a neutrino

• alpha

• beta

• gamma

• positron

• electron capture

consists of high-speed electrons

• alpha

• beta

• gamma

• positron

• electron capture

forms a particle with a positive charge but low mass

• alpha

• beta

• gamma

• positron

• electron capture