Radiactivity and Nuclear Reactions

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

What type of radioactive decay is shown here?

• Alpha decay
• Beta decay
• Gamma decay

Tags

NGSS.HS-PS1-8

What type of nuclear reaction occurs in the Sun?

• Nuclear fission
• beta decay
• alpha decay
• Nuclear fusion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What type of decay is shown here

• alpha decay
• beta decay
• gamma decay

Tags

NGSS.HS-PS1-8

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

Tags

NGSS.MS-PS1-1

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

• 11
• 5
• 6
• 16

Tags

NGSS.MS-PS1-1

After the third half-life, how much of the sample is left?

• 1/2
• 1/3
• 1/16
• 1/8

Tags

NGSS.HS-PS1-8

The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?

• 3.0g
• 0.25mg
• 0.3g
• 0.25g

Tags

NGSS.HS-PS1-8

The % of the parent isotope remaining after 2 Half Lives.

• 50%

• 25%

• 12.5%

• 6.25%

Tags

NGSS.HS-PS1-8

Negatively charged particles emitted from a nucleus at a high speed are

• X-rays

• gamma particles

• alpha particles

• beta particles