What Is an Atom and How Do We Know?
Duration: 12:14
Posted: Sep 18, 2018
by Stated Clearly
Views > 1,000,000 (when accessed on 7/7/20)
What Are Atoms Made Of?
Duration 7:36
Posted: Jan 3, 2019
by Stated Clearly
Views > 230,000 (when accessed on 7/7/20)
Guide to Internet Resources
related to
Chemistry
What Is a Molecule?
Duration: 8:18
Posted: Jun 26, 2019
by Stated Clearly
Views > 140,000 (when accessed 7/7/20)
Understanding the Atom
Duration 35:35
Posted: Mar 12, 2019
by SponholtzProductions
Views > 13,000 (when accessed 7/7/20)
How atoms bond
Duration 3:33
Posted: Oct 15, 2013
by TED-Ed
Views > 523,000 (when accessed 7/7/20)
Water and Hydrogen Bonds
(The Importance for Living Organisms)
Duration: 6:00
Posted: Dec 26, 2018
by Science Sauce
Views > 3,600 (when accessed 7/7/20)
Covers:
atomic structure
protons, neutrons, electrons
(atomic number)
(isotopes)
ions
Covers:
atoms
elements
compounds
law of multiple proportions
scanning tunneling microscopes
Covers:
molecules
covalent bonds
space filling models
ball & stick models
molecular vibrations
CHAPTER ONE (time 0:00-11:50) covers:
atomic number
protons & neutrons, & mass number
isotopes
atomic mass & atomic mass unit
anions & cations
CHAPTER TWO, THREE, FOUR
cover electron configurations (more than you probably want to know for this class)
What is a Protein?
Duration: 6:57
Posted: Nov 20, 2017
by RCSBProteinDataBank
Views > 1,184,000 views when accessed 7/11/20
Structure of an Atom
Duration 2:01
Posted: Jan 6, 2016
by Ricochet Science
Views >150,000 (when accessed 7/11/20)
Covers:
protons, neutrons, electrons
charges and locations of subatomic particles
(atomic number)
isotopes
valence electrons
Isotopes
Duration: 2:08
Posted: Jan 6, 2016
by RicochetScience
Views > 130,000 (when accessed 7/11/20)
Covers:
isotope definition
examples of carbon isotopes
carbon-12, carbon-13, carbon-14
carbon-14 is unstable/radioactive
What are Isotopes? I Chemistry Basics
Duration: 4:24
Posted: Aug 14, 2018
by Reactions (American Chemical Society)
Views > 32,000 (when accessed 7/11/20)
Covers:
nucleus: protons, neutrons
discovery of two types of Neon (2 isotopes)
mass of electron compared to protons/neutrons
chemical reactions vs. nuclear reactions
alpha decay, beta decay, gamma decay
decay can be dangerous, but can also be useful
Covers:
ionic bond
covalent bond
protons, electrons
(valence shell)
C - 4 bonds, N - 3 bonds, O - 2 bonds
sizes of molecules
Covers:
water
covalent bond
partial charges - polarity
hydrogen bonds
water as solvent
cohesion, specific heat capacity,
heat of vaporization, transpiration pull,
surface tension, density of ice
Chemical Bonding - Ionic vs. Covalent Bonds
Duration: 2:14
Posted: Jan 6, 2016
by RicochetScience
Views > 405,000 (when accessed 7/13/20)
Covers:
octet rule
covalent bond
ionic bond
CH4
Na+ Cl-
Electronegativity
Duration: 2:11
Posted: Jan 6, 2016
by RicochetScience
Views: >23,000 (when accessed 7/13/20
Covers:
electronegativity
C (EN=2.6) and H (EN=2.2)
C-H nonpolar bond
H (EN=2.2) and O (EN=3.4)
O-H polar covalent bond
Properties of Water
Duration: 4:13
Posted: Jan 6, 2016
by RicochetScience
Views >235,000 (when accessed 7/13/20)
Covers:
structure of water
and existence of hydrogen bonds
are responsible for water properties of:
universal solvent, cohesion and adhesion,
high surface tension, high heat capacity,
changes in density based on temperature
Properties of Water I Hydrogen Bonding in Water
Duration: 12:36
Posted: Jun 26, 2017
by Socratica
Views: >58,000 (when accessed 7/13/20)
Covers:
hydrogen bonding
O delta- H delta+ charges attracted to each other
cohesion, high surface tension, adhesion transpiration, high specific heat,
high heat of vaporization
solvation of charged particles (polar and ionic)
ice less dense than liquid
A Tasting of Culinary Science - Water & Hydrogen Bonds
Duration: 2:40
Posted: Mar 1, 2016
by The Culinary Institute of America
Views: >3,000 (when accessed 7/13/20)
Covers:
water has two covalent bonds
with unequal sharing
responsible for hydrogen bonds
hydrogen bonds between water & water
hydrogen bonds between water & polar substances
up to 4 hydrogen bonds / water molecule
hydrogen bonds in water and ice
high specific heat
How big is a mole? (Not the animal, the other one)
Duration: 4:32
Posted: Sep 11, 2012
by TED-Ed
Views >1,505,000 (when accessed 7/13/20)
Covers:
N = 6.02 x 10e23
602,000,000,000,000,000,000,000 = mole
= Avogadro's number
ways to visualize this big number
Acids, Bases and pH
Duration: 2:01
Posted: Jan 6, 2016
by RicochetScience
Views > 156,000 (when accessed 7/13/20)
Covers:
water dissociates into
hydrogen ions & hydroxide ions
acids release more hydrogen ions
bases release more hydroxide ions
pH scale 7=neutral >7=base <7=acid
The strengths and weaknesses of acids and bases
Duration: 3:47
Posted: Oct 24, 2013
by TED-Ed
Views >610,000 (when accessed 7/13/20)
Covers:
donating protons / accepting electrons
strong acids do this aggressively
weak acids do this occasionally
accepting protons / donating electrons
strong bases do this aggressively
weak bases do this occasionally
Bicarbonate - The Primary Buffer
Duration: 2:11
Posted: Jun 15, 2015
by Medmastery
Views >60,000 (when accessed 7/13/20)
Covers:
buffers take up and release H+
primary buffers in the body
primary buffer in extracellular compartment
metabolic acidosis
Acid Base Balance: Bicarbonate Ion Buffer
Duration: 3:04
Posted: May 10, 2017
by DrBruce Forciea
Views >46,000 (when accessed 7/13/20)
Covers:
blood pH = 7.35-7.45
abnormal pH can lead to coma and death
pH maintained by buffers
most important buffer in blood = bicarbonate ion
acids give up hydrogen ions
bases combine with hydrogen ions
blood acidosis, blood alkalosis
respiratory system control of pH
Biomolecules and Functional Groups
Duration: 3:00
Posted: Sep 21, 2015
by RicochetScience
Views >62,000 (when accessed 7/13/2020)
Covers:
biomolecules = organic molecules
contain C-C or C-H bonds
carbon can also bind to O, N, P, S
carbon skeleton
functional group
hydroxyl group, carboxyl group, amino group,
sulfhydryl group, phosphate group
proteins, carbohydrates, nucleic acids, lipids
Carbohydrates
Duration: 4:24
Posted: Nov 3, 2015
by RicochetScience
Views >240,000 (when accessed 7/13/20)
Covers:
carbohydrates 1C : 2H : 1O
mono-, di-, and poly-saccharides
glucose, fructose, galactose C6H12O6
glycosidic linkages
maltose, sucrose, lactose
plants: amylose, amylopectin, animals: glycogen
cellulose, chitin, peptidoglycan
simple sugars, complex carbohydrates
Lipids
Duration: 6:28
Posted: April 12, 2016
by RicochetScience
Views > 432,000 (when accessed 7/13/20)
Covers: lipids - hydrophobic
energy storage, protection, insulation, lubrication
hormone precursors, cell membranes
triglycerides-fats, oils, glycerol, fatty acids,
saturated fatty acids, unsaturated fatty acids
trans fatty acids, phospholipids-hydrophilic heads + hydrophobic tails, steroids-4 carbon rings + functional groups, cholesterol, testosterone, estrogen, waxes
What is fat?
Duration: 4:21
Posted: May 22, 2013
by TED-Ed
Views > 1,890,000 (when accessed 7/13/20)
Covers:
fat=triglycerides
short vs long fatty acids
only carbon-carbon single bonds (saturated)
some carbon-carbon double bonds (unsaturated)
cis and trans fats (partially hydrogenated)
healthy fats (unsaturated) vs.
unhealthy fats (saturated + trans fats)
Proteins
Duration: 2:11
Posted: Nov 13, 2015
by RicochetScience
Views > 101,000 (when accessed 7/13/2020)
Covers:
proteins made of amino acids
carboxyl group, amino group, R-group
peptide bonds, polypeptide chains
primary structure
secondary structure
pleated sheet, helix, hydrogen bonds
tertiary structure
quaternary structure
Covers:
amino acid - carboxyl & amino group, side chain
hydrophobic, hydrophilic, and charged amino acids
primary, secondary, tertiary, & quaternary structure
space-filling, ribbon, and surface diagrams
protein size, shape, function
defense, communication, enzymes, transport, storage, structure
Enzymes and Activation Energy
Duration: 1:56
Posted: Apr 26, 2016
by RicochetScience
Views > 36,000 views (when accessed 7/13/20)
Protein Structure
Duration: 2:27
Posted: Sep 9, 2011
by University of Surrey
Views > 107,000 (when accessed 7/13/20)
Covers:
amino acids
peptide bond
primary structure
secondary structure
tertiary structure
quaternary structure
specific function is due to specific shape
How this disease (sickle-cell disease)
changes the shape of your cells
Duration: 4:40
Posted: May 6, 2019
by TED-Ed
Views > 469,000 (when accessed 7/14/20)
Covers:
sickle cell disease
hemoglobin
mutated proteins form rods which deform cells
sickled cells snag, pile up, block blood vessels
effect on spleen, lungs, eye, brain
shortened red blood cell survival - anemia
sickle mutation has benefit in regions with malaria
treatments
Covers:
enzymes speed up chemical reactions
reactants, products, activation energy
Enzymes: The Induced Fit Model
Duration: 1:53
Posted: Dec 15, 2015
by RicochetScience
Views > 102,000 (when accessed 7/14/20)
Covers:
enzymes
active site
substrate
induced fit
optimal environmental conditions (pH, temperature)
affect enzyme efficiency
denaturation
How Enzymes Work
Duration: 4:51
Posted: Apr 20, 2017
by RCSBProteinDataBank
Views > 517,000 (when accessed 7/14/20)
Covers:
enzymes catalyze reactions
enzyme pathways (such as citric acid cycle)
enzyme rates
enzymes stabilize transition state
example: aconitase catalyzing citrate -> isocitrate
(induced fit)
Nucleic Acids
Duration: 3:05
Posted: Oct 1, 2015
by Ricochet Science
Views > 275,000 (when accessed 7/14/20)
Covers:
nucleic acids functions:
storing genetic information, protein synthesis
nucleotide monomers - sugar+P+nitrogenous base
A, G, C, T hydrogen bonding
sugar phosphate backbone
DNA vs RNA structural differences:
# strands, sugar, T/U, stability
ATP
ATP (Adenosine Triphosphate)
Duration: 1:55
Posted: Jun 13, 2016
by Ricochet Science
Views > 141,000 (when accessed 7/14/20)
Covers:
mitochondria produce ATP
ATP = energy carrier
ATP = adenine + ribose + P + P + P
high energy bonds
hydrolysis releases energy
ATP cycle: ATP -> ADP -> ATP
Could gene therapy cure sickle cell anemia?
Duration: 13:46
Date: Mar 10, 2019
by 60 MINUTES
Views (data not available)
Video and transcript of a CBS / 60 MINUTES
episode with correspondent Jonathan Lapook,
NIH director Dr. Francis Collins, gene therapy recipient Jenelle Stephenson, and others.
Malaria and Sickle Cell Anemia
Duration: 14:15
Date: Aug 26, 2014
by biointeractive
Views > 526,000 (when accessed 7/15/20)
This video is about the discovery
that heterozygous carriers of the sickle cell gene
have a survival advantage in areas of the world
where there is a high incidence of malaria.
