Mr H Nuclear Chem Quiz 1

Why are some element "radioactive" ?

• They are unstable because of an imbalance between the number of neutrons and protons in the nucleus
• They react to heat by decomposing and releasing radioactivity.
• They have too many electrons.

Which type of radiation has the greatest penetrating power?

• Alpha
• Beta
• Gamma 
• Microwaves

Tags

NGSS.HS-PS4-4

Alpha particles have a _____ charge.

• +2
• 0
• +1
• -1

Tags

NGSS.HS-PS2-4

An isotope has a different number of

• electrons
• neutrons
• protons
• positrons

Has the symbol

• Alpha
• Beta
• Gamma
• proton

What does it mean when an element is radioactive?

• Atom emits radiation

• Nucleus is unstable due to uneven proton to neutron ratio

• Nucleus changes to become stable

• All options listed.

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• Alpha

• Beta

• Gamma

• Neutron emission

Tags

NGSS.HS-PS1-8

What do carbon-12 and carbon-14 have in common? 

• They have the same number of protons
• They have the same number of neutrons
•  They have the same atomic mass
• They have the same atomic weight

Tags

NGSS.HS-PS1-8

Arrange in order of increasing ability to penetrate matter.

• Beta, gamma, alpha
• Alpha, gamma, beta
• Gamma, beta, alpha
• Alpha, beta, gamma

Tags

NGSS.HS-PS1-8

What element is the ?

• Ag-115
• Cd-115
• Pd-115
• Not Listed

Tags

NGSS.HS-PS1-1