phet.colorado.eduEnergy Forms and ChangesExplore how heating and cooling iron, brick, water, and olive oil adds or removes energy. See how energy is transferred between objects. Build your own system, with energy sources, changers, and users. Track and visualize how energy flows and changes through your system.Energy Forms and ChangesCBSE | Telangana | Andhra Pradesh | ICSE | Science | Chemistry | Properties of Matter | Energy Forms and Changes | Physical and Chemical Changes | Virtual Lab |