ChemThink – “The Behavior of Gases” is Here!

Category : Uncategorized · No Comments · by February 28, 2018

Great news!  “The Behavior of Gases” has been ported from Flash to HTML5.  This ChemThink tutorial took a lot of time to make, and it looks great!  All of the original controls are here, and the question set is as challenging as ever.  Students will adjust temperature, number of atoms, pressure, and volume to see how this affects the frequency and force of the collisions with the walls of the container.

If you have already donated to the site, thank you!  As of the time this writing, we are nearly halfway to meeting our yearly goal of $2500 to keep the site running.   If you have not donated yet, please consider donating., ChemThink, and rely on your support to pay for the cost of their web server.

Donate Today!

2018 Donation Drive for SimBucket, ChemThink, and QuizEvolved

Category : Uncategorized · No Comments · by February 13, 2018

Dear and users,

Last week I received an invoice from our web hosting company with a huge price increase for our servers. Up until this year, I have been able to pay for both sites with help from a few users, but with the price increase I can no longer afford the expense.

In order to ensure the financial stability of and, we are planning an annual donation drive. So far, we have collected the following donations for 2018:

$2,150 of $2,500 raised

Donate Today!

In addition to the donation drive:

1. I have consolidated all of our web services down to just two: a cloud-based VPS provider and Amazon Web Services. We now have a single, modern, powerful VPS that can easily handle all of the load for several hundred dollars cheaper per year than before.

2. At the end of 2018, I will review our income and expenses to make sure the websites are still financially viable.

Please donate today! If you are willing to donate for SimBucket, ChemThink, or QuizEvolved, please click here to continue to the donation form. With your help, I hope we can keep these sites free forever.

Chris Bruce
Physics Teacher, NBCT
Lead Developer,

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