Heat and the Particle Model Solid Liquid Gas Particles are closely packed Particles can slip past each Particles have lots of space together other between them The Effect of Heat on Particles When heat is added to a substance, the particles move faster. When heat is lost from a substance the particles move slower.
They run Apple's iOS mobile operating system. The first generation iPhone was released on June 29, 2007; the most recent iPhone model is the iPhone 7, which was unveiled at a special event on September 7, 2016. The user interface is built around the device's multi-touch screen, including a virtual keyboard.
The original iPhone was introduced by Steve Jobs on January 9, 2007 in a keynote address at the Macworld Conference & Expo held in Moscone West in San Francisco, California. In his address, Jobs said, I have been looking forward to this for two and a half years, and that today, Apple is going to reinvent the phone..