Unit Test

Question 1

Identify the term being defined. the force that keeps the nucleons bound inside the nucleus of an atom

Revolt · Accepted Answer

strong nuclear force; Selection 1: strong nuclear force; Selection 2: nuclear binding energy; Selection 3: mass defect

Question 2

the amount of energy needed to split the nucleus into individual protons and neutrons

Revolt · Accepted Answer

nuclear binding energy

Question 3

the difference between the mass of the nucleons and the mass of the atom

Revolt · Accepted Answer

mass defect

Question 4

Which items are directly related to radioactive decay?

Revolt · Accepted Answer

E = mc2; mass defect

Question 5

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force? Check all that apply.

Revolt · Accepted Answer

Nuclear binding energy is the energy needed to separate nuclear particles.; The strong nuclear force holds an atom’s protons and neutrons together.; Nuclear binding energy can be calculated using E = mc2.

Question 6

List three characteristics of chemical reactions and three characteristics of nuclear reactions.

Revolt · Accepted Answer

Answer

Question 7

Mass defect for oxygen-16 = 0.13261 amu How many kilograms does the mass defect represent?

Revolt · Accepted Answer

2.20 × 10 -28 kg

Question 8

Kilograms represented by the mass defect for oxygen-16: 2.20 × 10 -28 kgWhat is the nuclear binding energy for oxygen-16?

Revolt · Accepted Answer

1.98 × 10 -11 J

Question 9

Mass defect for the isotope thorium-234 = 1.85864 amuHow many kilograms does the mass defect represent?

Revolt · Accepted Answer

3.09 × 10-27 kg

Question 10

Kilograms represented by the mass defect for thorium-234 = 3.09 × 10-27 kgWhat is the nuclear binding energy for thorium-234?

Revolt · Accepted Answer

2.78 × 10-10 J

Unit Test Answers

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