Morgan Sizemore

University of Kentucky
7th Grade Science Teacher

Biography

I earned a Bachelor's degree in Chemistry before earning my Middle School Level Education degree. I am certified to teach math and science in grades 5-9. Currently, I am teaching 7th grade science and am finishing my second year. We teach an integrated science curriculum with physical science, life science, etc.

Education

BS Chemistry
University of Kentucky
BS Middle Level Education
University of Kentucky

Educator Statistics

Numerade tutor for 6 years
123 Students Helped

Topics Covered

Discover the Power of Gases: Benefits and Applications
Exploring the Fascinating World of Electrochemistry | Learn More Now
Unlocking the Power of Periodic Table Properties | Boost Your Knowledge
Atoms, Molecules, and Ions: Understanding the Building Blocks of Matter
Understanding Electronic Structure: A Comprehensive Guide

Morgan's Textbook Answer Videos

04:15
Chemistry

What is the energy of each of the following photons in kilo joules per mole?

(a) $\nu=5.97 \times 10^{19} \mathrm{s}^{-1} \quad$ (b) $\nu=1.26 \times 10^{6} \mathrm{s}^{-1}$
(c) $\lambda=2.57 \times 10^{2} \mathrm{m}$

Chapter 5: Periodicity and the Electronic Structure of Atoms
Morgan Sizemore
04:14
Chemistry

The data encoded on CDs, DVDs, and Blu-ray discs is read by lasers. What is the wavelength in nanometers and the energy in joules of the following lasers?

(a) CD laser, $\nu=3.85 \times 10^{14} \mathrm{s}^{-1}$
(b) DVD laser, $\nu=4.62 \times 10^{14} \mathrm{s}^{-1}$
(c) Blu-ray laser, $\nu=7.41 \times 10^{14} \mathrm{s}^{-1}$

Chapter 5: Periodicity and the Electronic Structure of Atoms
Morgan Sizemore
03:48
Chemistry

The semimetal germanium is used as a component in photodetectors, which generate electric current when exposed to light. If a germanium photodetector responds to photons in the range $\lambda=400-1700 \mathrm{nm},$ will the following light sources be detected?

(a) a laser with $\nu=4.35 \times 10^{14} \mathrm{s}^{-1}$
(b) photons with $E=43 \mathrm{kJ} / \mathrm{mol}$
(c) electromagnetic radiation with $\nu=706 \mathrm{THz}$

Chapter 5: Periodicity and the Electronic Structure of Atoms
Morgan Sizemore
03:16
Chemistry

According to the equation for the Balmer line spectrum of hydrogen, a value of $n=3$ gives a red spectral line at $656.3 \mathrm{nm},$ a value of $n=4$ gives a green line at $486.1 \mathrm{nm},$
and a value of $n=5$ gives a blue line at 434.0 nm. Calculate the energy in kilojoules per mole of the radiation corresponding to each of these spectral lines.

Chapter 5: Periodicity and the Electronic Structure of Atoms
Morgan Sizemore
01:14
Chemistry

Protons and electrons can be given very high energies in particle accelerators. What is the wavelength in meters of an electron (mass $=9.11 \times 10^{-31} \mathrm{kg} )$ that has been accelerated to 99$\%$ of the speed of light? In what region of the electromagnetic spectrum is this wavelength?

Chapter 5: Periodicity and the Electronic Structure of Atoms
Morgan Sizemore
01:53
Chemistry

What is the de Broglie wavelength in meters of a baseball weighing 145 $\mathrm{g}$ and traveling at 156 $\mathrm{km} / \mathrm{h}$ ?

Chapter 5: Periodicity and the Electronic Structure of Atoms
Morgan Sizemore
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