Nuclear Reactions

This type of reaction occurs when light nuclei combine to form a larger, single nucleus.

• Fission
• Fusion
• single displacement
• double displacement

Tags

NGSS.HS-PS1-8

At times, lost mass is converted into _________, during fission reactions.

• chain reactions
• energy
• critical mass
• fusion

Tags

NGSS.HS-PS1-8

Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?

• 0.25g
• 2.5g
• 25g
• 80g

Tags

CCSS.HSF.LE.A.4

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

CCSS.HSF.LE.A.4

The half life of iodine-131 is 8.040 days. What percentage of an iodine-131 sample will remain after 40.20 days?

• 312.5%
• 31.25%
• .3125%
• 3.125%

Tags

CCSS.HSF.LE.A.4

After 4 half-lives, 1g of a sample of Krypton-85 remains unchanged.  What was the original mass of the sample?

• 16g
• 32g
• 0.0625g
• 4g

Tags

NGSS.HS-PS1-8

What is the half-life of iodine-131?

• 32 days
• 8 days
• 16 days
• 24 days

Tags

NGSS.HS-PS1-8

Complete the nuclear equation and determine the type of decay that is occurring in this reaction. 

• alpha
• beta
• gamma
• none

Tags

NGSS.HS-PS1-8

Uranium-238  decays into  Thorium-234  by emitting .........

• an alpha particle
• a beta particle
• gamma rays
• visible light

Tags

NGSS.HS-PS1-8

For which of the following problems would a scientist most likely use carbon-14? 

• to calculate the age of the Earth's oldest rocks
• to calculate the age of a piece of bone 
• to identify the elements that make up a rock 
• to identify the elements that make up a bone