Matter comprises all substances that take up space and have mass, and it may exist as a solid, liquid, gas or plasma. Light and energy are not matter because they have no mass and do not occupy space.Continue Reading
The molecules that make up a solid lie close together and are bound strongly to one another. Because of this, solids have a distinct shape of their own that is not dependent on a container. The molecular bonds of a liquid are weaker than those of a solid, meaning that liquids do not have fixed shape. A liquid takes the shape of its container, but it does not change in volume. Molecules in a gas are very weakly bound. Like liquids, gases take the shape of their container. However, gases also change volume, expanding to fill their entire container.
The fourth phase of matter is plasma. Plasmas exist only at the high temperatures and pressures of the sun or bolts of lightning. Plasmas occur as electrons tear away from atoms, leaving behind positive ions and free electrons. Most scientists consider plasmas to be fluids like liquids and gases. Substance are able to transition between the stages of matter given the application or removal of heat.Learn more about Physics
Atomic explosions rely on the same principle that generates nuclear energy, which is that the potential energy of matter is equal to its mass multiplied by the square of the speed of light. In the case of most nuclear weapons, this involves the splitting of a uranium atom, which unleashes a massive explosion of energy.Full Answer >
The law of conservation of mass states matter can be changed from one form to another, but the total mass stays the same in an isolated system. If a group of items is mixed then the total mass is the same as the individual masses added together. Those items may change states, like liquid from a solid, but the mass of both states will be the same.Full Answer >
Matter is anything that physically takes up space and has mass. More specifically, anything that is made up of atoms is considered matter, which is everything.Full Answer >
The four states of matter are solid, liquid, gas and plasma. The state of matter of a substance can be changed by adding or removing heat.Full Answer >