Year 9 revise radioactivity

An isotope of an element has the same number of _________, but a different number of _________.

• Protons, electrons
• Protons, neutrons
• Electrons, neutrons

Tags

NGSS.HS-PS1-8

Which type of radiation has the charge and mass of an electron?

• Alpha radiation

• Beta radiation

• gamma radiation

What type of radiation can be stopped by clothing or a piece of paper?

• Alpha radiation

• Beta radiation

• gamma radiation

What type of decay is shown here

• alpha decay
• beta decay
• gamma decay

Tags

NGSS.HS-PS1-8

What instrument is used to detect radiation:

• Mass spectrometer

• Geiger counter

• Google

• Rate counter

A radioisotope is an atom in which the nucleus is

• Stable, and emits electromagnetic waves

• Unstable, and emits particles or electromagnetic waves

• Stable, and emits particles and electromagnetic waves

• Unstable and nothing happens

What type of radiation can be stopped by a few cm of aluminium?

• Alpha radiation

• Beta radiation

• gamma radiation

What type of radiation can be stopped by a few mm of lead?

• Alpha radiation

• Beta radiation

• gamma radiation

What is the charge and mass of an alpha particle

• 4+ and 2 AMU

• 2+ and 2 AMU

• 0 and 4 AMU

• 2+ and 4 AMU

All isotopes with atomic numbers greater than 82 are radioactive.

• True

• False