As energy from the sun reaches Earth, some solar radiation is absorbed by the atmosphere, leading to chemical reactions like ...

Particles can be atoms, molecules or ions. Particles behave differently in solids, liquids and gases. The particle model explains the ... the state of substances Gas pressure Pressure in gases ...

A new approach for modeling these reactions, developed by a team led by scientists at Penn State, may improve our ...

The water gas molecules will occupy all the space inside the can since the air molecules have been pushed out. The hot gas molecules are the same pressure as the air outside the can. When the can is ...

After viewing a model of salt, students help develop models for ... Explain that as the water evaporates, water molecules go into the air. The water molecules that evaporate become a gas called water ...

liquids and gases by considering the molecules they are made from and their motion. For gases, the kinetic theory model explains that gas pressure is caused by the collisions between the particles ...

This is a model of a lake or an ocean ... Explain that water molecules leave the liquid state and form water vapor, a gas. The molecules in water vapor become part of the air. The process of water ...