PhET Blog

We’ve added yet another HTML5 simulation: Friction.

Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away.

Want more HTML5 simulations? Help bring Circuit Construction Kit to iPad.

http://www.crowdrise.com/PhETHTML5CCKSimulation

Try the newest HTML5 simulation addition: ph Scale: Basic. Based on the JAVA pH Scale, the new HTML pH Scale: Basics  opens up the world of acids and bases to middle school students.

Test the pH of things like chicken soup, hand soap, blood, spit and soda. Investigate whether changing the volume or diluting with water affects the pH.

Want more HTML5 simulations? Help bring Circuit Construction Kit to iPad.

http://www.crowdrise.com/PhETHTML5CCKSimulation

Thank you Dean Baird for your comments regarding the behavior of John Travoltage. We have addressed the issues and the updated John Travoltage is now available at phet.colorado.edu.

Like our HTML5 simulations? Help bring Circuit Construction Kit to iPad.

http://www.crowdrise.com/PhETHTML5CCKSimulation

Do you remember dragging your feet across the carpet to make your hair stand up (or to shock your friends)? With it being so cold and dry here in Colorado and much of the US, have some fun with static electricity. Then show your students what is really happening with the HTML5 version of Balloons and Static Electricity.

Support PhET in your annual end-of-year donations. Every donation helps! Together we can improve the way science and math are learned. Choose:

• Bringing Circuit Construction Kit to iPads
• Building the “Teach with PhET” website

Try the new HTML5 iPad-compatible Forces and Motion: Basics simulation. Explore the forces at work in a tug of war or pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.

Like our tablet-compatible simulations? Support bringing Circuit Construction Kit to iPads: http://www.crowdrise.com/PhETHTML5CCKSimulation

Or support building the “Teach with PhET” website: http://www.crowdrise.com/helpbuildteachwithphet

Every donation helps! Together we can improve the way science and math are learned.

Try the newly published tablet-compatible John Travoltage simulation.

Make sparks fly with John Travoltage. Wiggle Johnnie’s foot and he picks up charges from the carpet. Bring his hand close to the door knob and get rid of the excess charge.

We’re excited to present the HTML5 version of Build an Atom. Now with your fingers, you can build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!

Watch your solution change color as you mix chemicals with water. Then check molarity with the concentration meter. What are all the ways you can change the concentration of your solution? Switch solutes to compare different chemicals and find out how concentrated you can go before you hit saturation!

Thank you Royal Society of Chemistry for your generous support of PhET!

Support from our community is invaluable for keeping the simulations up to date (including the HTML5 work) and free for all.

If you want to help support PhET, donate at http://phet.colorado.edu/donate

If you’d like to become a corporate sponsor, please e-mail [email protected]. Depending upon the level of sponsorship, your logo can appear on our website which has had over 70 million sims served!

What determines the concentration of a solution? Learn about the relationships between moles, liters, and molarity by adjusting the amount of solute and solution volume. Change solutes to compare different chemical compounds in water.