Isotopes and Radioactivity

Isotopes have the same ____________

• Mass number

• Number of electrons

• Number of neutrons

• All of these

Which type of radiation can be stopped by a sheet of paper?

• Alpha

• Beta

• Gamma

• All three

Which type of radiation has a positively charged particle?

• Alpha

• Beta

• Gamma

• All three

Which type of radiation can be released during radioactive decay?

• Alpha

• Beta

• Gamma

• All three

Tags

NGSS.HS-PS1-8

What element does X represent?

• Mg

• Si

• Fe

• Sr

Which particle does this symbol represent?

• an alpha particle

• a beta particle

• a positron

• a photon

Tags

NGSS.HS-PS1-8

Which particle is the nucleus of a helium atom?

• an alpha particle

• a beta particle

• a positron

• a photon

How many protons does this isotope have?

• 41

• 28

• 15

• 13

Tags

NGSS.MS-PS1-1

What is the mass number for this element?

• 12

• 14

• 26

• 38

Tags

NGSS.MS-PS1-1

Two atoms have the same atomic number

• They must be isotopes of the same element

• They must have the same number of neutrons

• They must have the same average atomic mass

• They must have the same number of protons plus neutrons, but are not related to each other in any other way.