Podcast Beta
Questions and Answers
What are the three states of matter and how can a substance change from one state to another?
The three states of matter are solid, liquid, and gas. A substance can change from one state to another when it is heated or cooled.
What is the particle model and how does it explain the properties of solids, liquids, and gases?
The particle model is a way to explain the properties of solids, liquids, and gases. In solids, particles are close together and held in fixed positions by strong forces. In liquids, particles are close together but can move around and are held by fairly strong forces. In gases, particles are far apart, can move around, and are held by very weak forces.
What is pressure in fluids and how can it be increased in a gas container?
Pressure in fluids is the force of collisions between particles in a fluid and the walls of a container or other objects in contact with the fluid. Pressure acts in all directions. The pressure of gas in a container can be increased by putting more particles into the container, heating the gas, or reducing the volume of the container.
