Educational Screencasts

Video presentations on various science topics.

Hello! Welcome to my Science Screencasts! I am attempting to incorporate some blended learning as an instructional strategy and flip my classroom whereby students watch some video presentations at home and then perform tasks and assignments based upon them in class.I'm still new to the process so I expect them to get better over time.

Use the sidebar on the left or up top to navigate more quickly to the topic you want. I will separate them by course once I produce enough of them. For now they will be listed alphabetically and for your viewing pleasure, me getting smashed on a bed of nails....

Scientific Notaton

Powers of 10 and Exponential Notation

Introduction to Scientific Notation | powerpoint | assignment |
This first video introduces scientific notation and explains why it is important in science..

Writing Numbers in Scientific Notation | powerpoint | assignment |
How to put big and small numbers into scientific notation and how to convert numbers in scientific notation into standard notation..

Arithmetic and Scientific Notation | powerpoint | assignment |
How to multiply, divide, add and subtract numbers in scientific notation.

Unit Conversions

Dimensional Analysis and the Factor Label Method

Introduction to Units | powerpoint | assignment |
This first video introduces units, defines them, explains their importance, goes over some famous unit conversion errors and mentions the danger associated with not using units.

Manipulating Units and Conversion Factors | powerpoint | assignment |
This second video goes through the rules for manipulating uits, and then explains what conversion factors are.

How to Convert Units using the Factor-Label method | powerpoint | assignment |
This third video goes straight into conversion problems.

Advanced Conversions | powerpoint | assignment |
This fourth video goes through several more advanced multi-step and multi-part conversion problems. For example, converting miles per hour into feet per second is explained step by step.

Chemical Bonding

Ionic, Covalent, Metallic and Intermolecular Bonds

How to Draw Lewis Dot Diagrams | powerpoint | assignment |
Explanation of how dot diagrams are drawn using column number of the representative elements.

How to Draw Bohr Diagrams | powerpoint | assignment |
Explanation of what a Bohr diagram models and an explanation of how to draw them using electron configurations.

Intro to Bonding: Ionic Bonds | powerpoint | assignment |
This first video briefly introduces Chemical bonding and then goes over ionic bonds, what they are, and how they form in detail. The formation of ions and common ionic charge are aslo covered.

Disassociation | powerpoint | assignment
THis video goes over disassociation in CHemistry, talks about water's polarity and how it seperates ionic compounds back into the cations and anions that joined together. A visual example of salt being placed in water is shown.

Naming Ionic Compounds and writing Formulas | powerpoint | assignment
This video explains how we name ions, name ionic compounds and write formula for ionic compounds including the transition metals.

Polyatomic Ions | powerpoint | assignment
This video explains how we name polyatomic ions and write formula for ionic compounds including polyatomic ions.

Mixing Aqueous Solutions | powerpoint | assignment
This video explains what happens when two disassociated ionic compounds in water are mixed together to form a precipitate (an insoluble compound).

Total and Net Ionic Equations | powerpoint | assignment
This video explains how to write a total ionic equation and how to determine the spectator ions and write a net ionic equation.

How to Balance Chemical Equations | powerpoint | assignment
This video explains how to balance chemical equations.

Metallic Bonding | powerpoint | assignment
This video explains the Sea of Electron Model of Metallic Bonding and uses it to explain the properties of metals.

How to Draw Covalent Lewis Structures [1 of 4] | powerpoint | assignment
This video goes through some Lewis structures for simple molecules.

Drawing Lewis Structures: Double Bonds and Triple Bonds [2/4] | powerpoint | assignment
More complicated Lewis structures are illustrated including double and triple bonds along with a more robust way of drawing Lewis dot structures.

Formal Charge: Drawing Lewis Structures: [3/4] | powerpoint | assignment
This video goes through the formula for calculating formal charge and does multiple examples.

Resonance, Octet Violations, Coordinate Bonds and Formal Charge Drawing Lewis Structures: [4/4] | powerpoint | assignment
This video goes through resonance structure, coordinate covalent bonds, an octet violation and using formal charge to draw Sulfuric Acid.

Periodic Table

Periodic Trends, Coulomb's law and Periodicity

Coulomb's Law | powerpoint | assignment
This first video in the series discusses Coulomb's inverse-square law for the electrostatic force. A qualititative/quantitative explanation is given.

Periodic Trends: Nuclear Charge and Electron Shielding | powerpoint | assignment
This screencast goes through through Nuclear charge and Electron Shielding in terms of Coulomb's law, and looks at trends in both on the periodic table.

Periodic Trends | powerpoint | assignment
This video builds on the foundation set by Coulomb's law, nuclear charge and electron shielding. Trends in ionization energy, atomic size, electronegativity and chemical reactivity are discussed.

Why does Sodium have a higher 2nd Ionization Energy? | powerpoint | assignment | time: 6 min |
This video explain why sodium has a much higher second ionization energy than a first ionization energy in terms of Coulomb's law and electron shielding.

Density Problems

Using the formula and Solving Density Problems

Density of an Object cut in half? | powerpoint | assignment |
What happens to the density of an object when it is cut in half?

Two Advanced Density Problems | powerpoint | assignment |
Mr. Sapone's highly loved solid sphere density problem where you are given only the mass and circumference of a sphere and have to calculate its density. After that we caclulate the mass of air in a room in kilograms and convert it into pounds.

Moles

Avogadro's Number, Molar Mass and Conversions

Hard Mole Problem | powerpoint | assignment
This video goes through one of my favorite mole problems. If I give you one atom of gold for every second that has elapsed.....

Motion Problems

Kinematics and Motion in one direction

Shark Problem | powerpoint | assignment |
Will the shark eat you? If so, how long do you have left to live?

Stopping Distance | powerpoint | assignment |
A brief look at the physics behind stopping a car and the dangers of not paying attention. Reaction time, breaking distance and dimensional analysis are covered.