Comes in Android and iOS versions. Easy to use and allows you to compress your exported pdf file. My favorite option out of these five. Evaluated v5.5.13 on an iPad Pro running iPadOS 14.3.

Comes in Android and iOS versions. You have to register to use it. Has a whiteboard option. Clean and easy-to-use interface. Evaluated v20.12.15 on an iPad Pro running iPadOS 14.3.

Comes in Android and iOS versions. When you first run it it asks if you want to do a trial of the pro version. But, you do not have to purchase it. You can use the free version. Clean and easy-to-use interface. Evaluated v8.0.3.725 on an iPad Pro running iPadOS 14.3.

Comes in Android and iOS versions. Allows you to set the scan resolution which can help with file size. In the Apple App Store it may look there's only a free 3-day trial until it turns into a paid subscription, but that's for the premium version. The free version works fine. Evaluated v5.32.0.2012212126 on an iPad Pro running iPadOS 14.3.

It was available starting with iOS 11 but the procedure is probably a little different for iOS 11 and 12. Evaluated on an iPad Pro running iPadOS 14.3.

Comes in Android and iOS versions. It connects with your Office 365 apps and also has a whiteboard scan mode. I don't like the file saving interface, though. Evaluated v2.44.4 (2.44.20122106) on an iPad Pro running iPadOS 14.3.

Only has an iOS version. It connects with Evernote which is nice and it cleans up scans nicely. But, there's some hurry-up-and-wait and the app's control over the camera light is flakey. I don't recommend it. Evaluated on an iPad Pro running iPadOS 13.3.1.

The basics of registering on the site, initial web browser check (troubleshooting), and how to see assignment deadlines.

An introduction to the LearnSmart assignments.

An introduction to the Connect homework assignments.

A discussion about significant figures.

An attempt to convince you of the need to use units in calculations.

Sets up the basics of solving mathematical problems that require units.

A basic one-step conversion.

A more complicated conversion problem with multiple steps.

This takes the previous podcast, "Dimensional Analysis: Distance from Speed and Time", and demonstrates a couple of alternate ways you can show your work. I also demonstrate an incorrect way to show your work and explain why it's wrong.

A multiple step conversion problem.

This one demonstrates how to do cubic unit (volume) conversions. A squared unit (area) conversion works similarly.

A more advanced look at significant figures.

A brief introduction to the naming of inorganic cmpounds.

Naming and writing the chemical formulas for binary molecular compounds.

How to determine the charges on cations and anions from the main group area in the periodic table.

Naming cations and anions made from main group atoms.

Naming ionic compounds formed from main group cations and anions.

Writing the chemical formula for ionic compounds formed from main group cations and anions.

Writing chemical formulas for binary ionic compounds using transition metal cations.

Writing the names of binary ionic compound using transition metals.

Writing the names and chemical formulas for ionic compounds with polyatomic ions.

Shows just how big the value of the mole is.

Demonstrates how to calculate molar mass for compounds based on the appropriate values for elements.

You should first watch the podcast "The Mole: How to Calculate Molar Mass". Demonstrates converting from mass to moles.

You should first watch the podcast "The Mole: Convert from Mass to Moles". Demonstrates converting from mass to moles.

Calculate the mass of calcium citrate when given the mass of calcium.

Calculate the mass percent of copper in azurite and malachite.

Determining the empirical formula when given the individual elements' mass percent.

You should work the previous one before attempting this one. This one has a mole ratio that is not initially a whole number.

Calculates the mass of carbon produced when a given mass of sucrose decomposes.

Calculates the mass of ammonia from given masses of hydrogen and nitrogen gases. This uses what I call the "brute force" method for determining the mass of a product when there's a limiting reactant.

Calculates the mass of ammonia from given masses of hydrogen and nitrogen gases. This is the same problem as the previous one but this time I first determine the limiting reactant and then calculate the mass of product based on that limiting reactant.

Compares the methods shown in the two previous podcasts.

This stoichiometry problem adds an additional percent yield calculation to it.

Discusses the solubility rules we'll use in class.

Reaction between silver nitrate and sodium chloride.

Reaction between sodium hydroxide and iron(III) nitrate.

Reaction between aluminum sulfate and ammonium nitrate.

Demonstrates how to use the online ChemDraw homework web app.

Demonstrates how to enter formal charges (near the end of the video is an example where the formal charge is more than 1). Also shows how to adjust a structure when atoms like hydrogen are spontaneously added and need to be removed.

Introduces the rules we'll use for writing Lewis structures (electron-dot structures).

This one introduces the multiple bond with diatomic oxygen.

This is an older podcast and uses a set of rules that are a little different than the rules I now use.

This is an older podcast and uses a set of rules that are a little different than the rules I now use.

This one goes over how to calculate formal charge in detail and uses it to determine which of multiple Lewis structures for the carbon dioxide molecule is the best one.

This one uses formal charge to determine which of multiple Lewis structures for the thiocyanate ion is the best one. If you have yet to calculate formal charge, you need to watch the previous one about carbon dioxide, first.

This one shows how to use formal charge to change the multiple bonding.

How to use the combined gas law when pressure, volume, and temperature are all changing.

How to use the combined gas law when volume and temperature are changing.

This one starts from the results of the previous podcast, "Gas Laws: Changing Volume and Temperature", and looks at the temperature units.

Introduces the ideal gas law and the ideal gas constant.

Calculates the volume of one mole of an ideal gas under standard conditions and compares it to some experimental results.

Calculates the temperature of a sample of propane gas in a gas cylinder assuming it's an ideal gas.

Calculates the mass of the hydrogen gas in the Hindenburg assuming it's an ideal gas.

Calculates the density of ammonia assuming it's an ideal gas.

Calculates the molar mass of an ideal gas.