Radioactive Decay

How many grams of Carbon-14 will remain after 17,100 years?

• 32 g

• 16 g

• 8 g

• 4 g

Tags

NGSS.HS-PS1-8

Which disintigration product is represented on the graph?

• ²⁰⁶Pb

• ⁸⁷Sr

• ⁴⁰Ar

• ¹⁴N

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NGSS.HS-PS1-8

How many half-lives have passed if 12.5% ¹⁴C remains?

• 1 Half-life

• 2 Half-lives

• 3 Half-lives

• 4 Half-lives

What percentage of Rubidium-87 will remain after 4 half-lives?

• 25%

• 12.5%

• 6.25%

• 3.125%

Tags

NGSS.HS-PS1-8

Which of the following is defined as the breakdown of a radioactive element releasing particles and energy

• Radiometric Dating

• Half LIfe

• Law of Superpostion

• Radioactive Decay

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NGSS.HS-PS1-8

Occurs when atoms of an unstable element break down to form atoms of another element

• Erosion

• Index Fossils

• Radioactive Decay

• Law of Superposition

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NGSS.HS-PS1-8

How many of the atoms have decayed to daughter atoms after 2 half-lifes?

• 10

• 5

• 15

• 2.5

Carbon-14 decomposes into ​ (a)  

• Nitrogen-14

• Nitrogen-12

• Uranium

• Lead

• Argon

• Potassium

Tags

NGSS.HS-PS1-8

How much radioactive material is left after 10 years?

• 6.25%

• 50%

• 25%

• 12.5%

Tags

NGSS.HS-PS1-8

What is the half-life of mercury-203?

• 50 years

• 50 days

• 50%

• 100 days

Tags

NGSS.HS-PS1-8