Understanding Atomic Mass and Energy

What is the unified atomic mass unit (amu) based on?

• 1/12 of the mass of a carbon-12 atom

• 1/12 of the mass of a hydrogen atom

• 1/12 of the mass of a nitrogen atom

• 1/12 of the mass of an oxygen atom

Why is the speed of light squared in Einstein's equation significant?

• It is used to measure mass

• It has no effect on energy output

• It reduces the energy output

• It increases the energy output

What is the primary unit of energy used in atomic physics?

• Electron volts

• Calories

• Joules

• Watts

What does a mass defect in a nucleus indicate?

• The nucleus is unstable

• The mass of the nucleus is greater than the sum of its parts

• The nucleus has no energy

• The mass of the nucleus is less than the sum of its parts

How is binding energy related to nuclear stability?

• Binding energy only affects chemical reactions

• Higher binding energy indicates less stability

• Higher binding energy indicates more stability

• Binding energy has no relation to stability

What is the mass number of iodine-127?

• 1

• 53

• 127

• 74

How is the number of neutrons in an atom calculated?

• By multiplying the atomic number by the mass number

• By dividing the mass number by the atomic number

• By subtracting the atomic number from the mass number

• By adding the atomic number and mass number

What is the significance of calculating binding energy per nucleon?

• It provides insight into the stability of a nucleus

• It determines the color of the element

• It helps in determining the chemical properties of an element

• It is used to calculate the atomic number

What is the role of the strong nuclear force in binding energy?

• It has no effect on protons and neutrons

• It repels protons and neutrons

• It only affects electrons

• It attracts protons and neutrons

What does the term 'nucleon' refer to?

• Only protons

• Only neutrons

• Only electrons

• Both protons and neutrons