What is the mass number of an atom?
PHYSICAL SCIENCE PRACTICE EOC

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Physics, Chemistry
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10th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The mass number is the total number of protons and neutrons in an atom's nucleus. For example, an atom with 29 protons and 35 neutrons has a mass number of 64.
2.
FLASHCARD QUESTION
Front
What are the four fundamental forces in nature?
Back
The four fundamental forces are gravity, electromagnetic force, strong nuclear force, and weak nuclear force. Friction is NOT one of these forces.
3.
FLASHCARD QUESTION
Front
What is Newton's Third Law of Motion?
Back
Newton's Third Law states that for every action, there is an equal and opposite reaction. For example, when a student kicks a ball, the ball exerts an equal force back on the student.
4.
FLASHCARD QUESTION
Front
What is a decomposition reaction?
Back
A decomposition reaction is a type of chemical reaction where a compound breaks down into simpler substances. For example, the breakdown of water into hydrogen and oxygen.
5.
FLASHCARD QUESTION
Front
How does heat transfer occur through radiation?
Back
Radiation is the transfer of heat in the form of electromagnetic waves. An example is the heat from the sun warming a car.
6.
FLASHCARD QUESTION
Front
What is the difference between conduction and convection?
Back
Conduction is the transfer of heat through direct contact, while convection is the transfer of heat through the movement of fluids (liquids or gases).
7.
FLASHCARD QUESTION
Front
What is the formula for calculating force?
Back
Force (F) is calculated using the formula F = mass (m) × acceleration (a). For example, a 2.5 kg ball kicked with a force of 500 N has an acceleration of 200 m/s².
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