Chapter 1: Basic Physics

Question 1

Charge on an electron

Answer 1

1.602 x 10^-19 C

Question 2

What is an isotope vs isotone vd isobar vs isomer

Answer 2

Isotope - same number of protons
Isotone- same number of neutrons
Isobar - same number of nucleons (A)
Isomer - identical atoms that differ in energy states

Question 3

As Z increases, what happens to the neutron:proton to create more stable atoms?

Answer 3

The N:P ratio will increase above 1 after Z of 20

Question 4

How is 1 amu defined?

Answer 4

1 amu = 1/12 the mass of a 12Carbon atom

Question 5

What is Avogadros constant?

Answer 5

6.022 x 10^23 atoms per gram atomic weight

Question 6

What is the definition of 1 eV?

Answer 6

The kinetic energy acquired by an electronic passing through a potential difference of 1 V

Question 7

How many Joules in 1 eV?
Hint: how does this relate to the charge of an electron?

Answer 7

1 eV = 1.602 x 10^-19 J

Question 8

What is the rest mass energy of am electron?

Answer 8

0.511 MeV

Question 9

What is the relationship between the potential energy and binding energy of a bound electron?

Answer 9

Binding energy is greater than 0 and increases as you move closer to the nucleus.

Potential energy is the negative of the binding energy. It will never be greater than 0

Question 10

What is the equation for the speed of light in relation to frequency and wavelength?

Answer 10

C = (frequency) x (wavelength)

Question 11

What is the equation for the energy level of a photon in relation to:
1. Planck’s constant
2. speed of light
3. wavelength

Answer 11

E = hc/(wavelength)

Question 12

What are the 4 fundamental forces?

Answer 12

1. Gravity
2. Electromagnetic
3. Strong nuclear force
4. Weak nuclear force

Question 13

What is the energy equivalent of 1 amu?

Answer 13

1 u = 931.5 MeV