Chemistry and physics notes

Comprehensive practice flashcards covering Bohr's atomic model, kinetic graphs, and literary analysis of Shirley Toulson's poetry based on lecture notes.

According to the Bohr model, what is the formula for the radius of the stationary states in a hydrogen atom?

$r_n = n^2 a_0$, where $a_0 = 52.9\,pm$

What is the energy formula for a hydrogen atom in its stationary states according to Bohr's theory?

$$E_n = -2.18 \times 10^{-18} \left(\frac{1}{n^2}\right)\text{ Joules}$$

Which specific ions, containing only one electron, can Bohr's theory be applied to?

$He^{2+}$, $Li^{2+}$, and $Be^{3+}$

What is the formula for the energy ($E_n$) of orbits for single-electron ions other than hydrogen?

$$E_n = -2.18 \times 10^{-18} \left(\frac{Z^2}{n^2}\right)\text{ Joules}$$

What is the formula for the radius of a single-electron ion orbit relative to its atomic number ($Z$)?

$$r_n = \frac{52.9(n^2)}{Z}\,pm$$

What does the 'Dual Behaviour of Electro Magnetic Effect' refer to?

Light possesses both particle and wave like properties; radiation displays particle-like properties when interacting with matter.

Which two effects demonstrate the particle-like properties of radiation?

Black body radiation and photoelectric effect

What is often referred to as the 'finger print' of an atom?

Line spectrum or atomic emission spectrum

What physical quantity does the slope of a position-time ($x-t$) graph provide?

Velocity

What physical quantity does the slope of a velocity-time ($v-t$) graph provide?

Acceleration

What physical quantity is represented by the area under a velocity-time ($v-t$) graph?

Displacement

Define instantaneous acceleration as shown in the notes.

The acceleration of a body at any instant of its motion, given by $a = \lim_{\Delta t \rightarrow 0} \frac{\Delta v}{\Delta t} = \frac{dv}{dt}$

Who is the author of the poem 'A PHOTOGRAPH' and what were her years of life?

Shirley Toulson (1924-2017)

What are the four pillars/themes of the poem 'A PHOTOGRAPH'?

1. Passage of Time, 2. Memory & Nostalgia, 3. Loss & Absence, 4. Relationship

In the 'Anatomy of Time' in Shirley Toulson's work, what is considered 'Transient'?

Human life and physical presence; fleeting everyday moments

In the 'Anatomy of Time' in Shirley Toulson's work, what is considered 'Permanent'?

The endless, indifferent march of time and recorded photographs

What is Bohr's Frequency Rule?

$$\nu = \frac{\Delta E}{h} = \frac{E_2 - E_1}{h}$$

In Bohr's model, what is the quantised condition for the angular momentum of an electron?

The angular momentum is an integral multiple of $\frac{h}{2\pi}$

List the five series of hydrogen spectral lines and their corresponding spectral regions.

Lyman (UV), Balmer (Visible), Paschen (IR), Brackett (IR), Pfund (IR)

What is the numerical value of the hydrogen constant/Rydberg constant used in the wave number formula?

$109,677\,cm^{-1}$ (or $1.09677 \times 10^7\,m^{-2}$)

According to the notes, what names are given to the stationary states besides their numbers (1, 2, 3)?

K, L, M, N