Mass Defect and Binding Energy

The energy equivalent in joules of the mass of

2.0 *10^-31 𝑘𝑔 _____.

• 2.0 *10^-31𝐽

• 6.0 *10^-23 𝐽

• 1.8 * 10^-14𝐽

• 8.2 * 10^-14 𝐽

As the binding energy of a nucleus increases, the

energy required to separate the nucleus into

nucleons _____.

• decreases

• increases

• stays the same

• becomes negative to positive

Which of the following statements is/are correct

regarding the binding energy of the nucleus.

I. It is equivalent to the mass defect

II. It is the energy that holds the nucleus

together

III. It is the energy required to remove a

proton from the nucleus

• I only

• II only

• III only

• I and II only

When nucleons form stable nucleus, binding

energy is _______.

• created from nothing

• destroyed into nothing

• absorbed as high energy photons or

  particles

• released as high energy photons or particles

Which graph best represents the relationship

between energy and mass when matter is converted

into energy?

• A

• B

• C

• D

The mass of ¹²C is 12 𝑢 where;

1𝑢 = 1.660 559 * 10^-27𝑘𝑔. This mass is equal to:

• The mass of ¹²C nucleus

• The mass of ¹²C nucleus plus 6 electrons

• The mass of ¹²C nucleus plus 12 electrons

• The mass of 6 protons and 6 neutrons

The atom ₇¹⁴𝑁

has a mass of 14.0031 𝑢.

The mass defect equals ______.

• 0.1089 u

• 0.2026 u

• 0.2341 u

• 0.0003 u