What is the key rule to remember about the mass of products in nuclear reactions?

Nuclear Decay and Energy Concepts

Interactive Video
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Physics
•
11th - 12th Grade
•
Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The mass of products must be equal to the mass of reactants.
The mass of products must be greater than the mass of reactants.
The mass of products is irrelevant to energy release.
The mass of products must be less than the mass of reactants.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the alpha decay of radium-226, what is the resulting element?
Helium
Radon
Uranium
Thorium
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is released alongside radon in the alpha decay of radium-226?
A gamma ray
A beta particle
A neutron
An alpha particle
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the kinetic energy not conserved in the alpha decay process?
Because energy is lost as heat
Because energy is converted into mass
Because energy is converted into kinetic energy
Because energy is absorbed by the surroundings
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the mass defect related to the energy released in a nuclear reaction?
It is directly proportional
It is equal to the energy released
It is unrelated
It is inversely proportional
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the approximate mass defect in the decay of radium-226?
0.100 U
0.020 U
0.025 U
0.052 U
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in 50 grams of radium?
5.0 x 10^23
2.5 x 10^23
6.02 x 10^23
1.3 x 10^23
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