To see why solids melt and liquids freeze, you need to know two things about matter (solids, liquids, and gases). First, all ordinary matter is made up of atoms, often attached together as molecules. The matter tends to stay together because those molecules are pulling on each other. The other thing is that molecules are always bumping and moving around, and the hotter they are, the more they move.
When you get a solid hot, the molecules bump around faster and harder until they start breaking apart and moving around each other; that's when a solid melts and becomes a liquid. However, in a liquid, the molecules still pull on each other enough to stay bunched together (that's why a drop of water on a table is round, and doesn't spread out all over). If you heat the liquid up even more, the molecules fly around fast enough to break totally free of each other; now they can go anywhere, and the liquid boils off into a gas and just spreads out and mixes into the air.
The opposite happens when you cool down a gas: first it becomes a liquid, then a solid.
Some solids can even become a gas without first becoming a liquid; this is called "sublimation". For instance, ice in a freezer slowly disappears, since it's subliming into a gas. The opposite happens, too: that's why you get frost (which is tiny ice crystals) in a freezer, and on cold window panes.
Changing the pressure on a solid, liquid, or gas can make it change state, too.
Flow. Gases and liquids can both modify their shapes.
Only solids have a definite shape. Neither liquids nor gases have a definite shape.Only solids have a definite shape. Neither liquids nor gases have a definite shape.Only solids have a definite shape. Neither liquids nor gases have a definite shape.Only solids have a definite shape. Neither liquids nor gases have a definite shape.
solids, liquids, and gases
solids, liquids, and gasses, all depend on how many atoms are in that element.
Solids: concrete, glass, steel Liquids: water, beer, wine Gases: air, carbon dioxide, methane
yes. solids are more dense than liquids and the particles in gases are more spread out and faster.
solids because the atoms are closer together
Gases spread out faster than liquids, and liquids spread out faster than solids. Gases, liquids, and solids are the three main phases of matter. A material moves to a different phase if its kinetic energy is changed enough (Kinetic energy is a measure of heat or temperature). For example, if you heat an ice cube (solid water), it will melt into water (liquid water). Gases have the highest kinetic energy. The molecules inside a gas are the fastest moving of the three phases. That means gas will spread out the fastest. Kinetic energy: Gas ---> Liquid ---> Solid [Decreasing] Solid ---> Liquid ---> Gas [Increasing]
bounces of glass
Less bonding between the molecules.
some solids,liquids and gases are dangers some are not dangers
solids and liquids
Conduction is useful because it allows you to heat solids. FACT: Solids heat faster than liquids and gases.
solids - tightly packed and unable to move liquids- tightly packed but able move gases- spread out and able to move
the molecules of gases are spread out very far apart and are not being restricted like solids or liquids
Molecules - They are more tightly packed in solids than liquids and gases
The kinetic energy is lowest in solids, higher in liquids, and highest in gases.