Nuclear Chemistry Review #1

Nuclear reactions involve the ____________; whereas chemical reactions involve the ______________.

• electrons; protons

• nucleus; electrons

• nucleus; neutrons

Tags

NGSS.HS-PS1-8

The spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus is called ___.

• radioactive decay

• nuclear radiation

• transmutation

Tags

NGSS.HS-PS1-8

Particles or electromagnetic radiation emitted from the nucleus during radioactive decay are called

• nuclear fission

• radioactive decay

• nuclear radiation

Tags

NGSS.HS-PS1-8

The purpose of the control rods in a nuclear reactor power plant is to

• cool the reactor core

• change the concentration of uranium

• absorb free neutrons

Tags

NGSS.HS-PS1-8

Which of the following particles has the same mass as helium and is sometimes emitted from the nucleus during radioactive decay?

• beta particle

• alpha particle

• positron

Tags

NGSS.HS-PS1-8

The splitting of a nucleus, such as uranium-235, into two or more smaller nuclei is called ____________, which provides an alternative source of energy.

• nuclear fission

• nuclear fusion

• gamma radiation

Tags

NGSS.HS-PS1-8

The combining of two nuclei to form one nucleus with a larger mass is called a ____________.

• chain reaction

• fusion reaction

• fission reaction

Tags

NGSS.HS-PS1-8

Uranium-235 atoms have how many protons?

• 143

• 235

• 92

Nuclear fusion ____________.

• produces hydrogen nuclei

• takes place in the sun

• occurs when large nuclei break apart

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Which of the following has the greatest penetrating power?

• alpha particle

• beta particle

• gamma rays