molecules in solids are stationary whilst those in gases and liquids move around, more though in liquid.
Liquid to a solid is: freezingLiquid to a gas is: condensationSolid to a liquid : is meltingGas to a liquid is: evaporation
The heat energy required to change a substance between solid & liquid at constant temperature is called the "latent heat of fusion". If the change is from solid to liquid the substance gains this energy. If the change is from liquid to solid the substance gives up this energy. The exact amount of latent heat of fusion is different for different substances.
When a substance condenses, it turns from a vapor (gas) into a liquid. When this occurs, the atoms/molecules lose some kinetic energy, and don't move as fast. They also become packed closer together, and take up less volume.
there is no particular point which gas changes to liquid, because all substances have different points where gas changes to liquid. Water vapor changes to liquid at 100 degrees Celsius
A gas changing to a liquid is considered "condensation".A most common examples of condensation is the forming of little water droplets on the side of a bottle of water grabbed directly from the refrigerator on a hot day.
the molecules in solids are tigthly packed that is the intermolecular force(cohesive) force is more but in liquids the intermolecular force(cohesive force) is less .solids have fixed shape,volume, mass but liquids have no fixed shape as it takes shape of the container.
Generally, the molecules in gases are further apart than molecules of the same substance in either liquid or solid state. However, note the existence of a critical temperature for each substance. Above the critical temperature, no liquid or solid phase can exist, but it would be theoretically possible to compress a supercritical substance so that it would have closer molecules than some liquid form of the same substance.
Liquid nitrogen is a pure substance because it consists of only nitrogen molecules in liquid form.
they get further apart
use your book
If a substance is: a type of solid, liquid or gas that has particular qualities. Then yes, soy sauce is a substance.
As a substance transitions from liquid to gas, the molecular motion increases. In the liquid state, molecules move more freely but are still close together. When the substance becomes a gas, the molecules move even more rapidly and are much farther apart.
the force of attraction between its molecules becomes strong enough to overcome the energy of motion that its molecules have when the substance is in its liquid state, molecules are locked into rigid crystalline formations.
A substance changes from a solid to a liquid at the substance's melting point. This is a different temperature for every substance. For example, water (ice) melts at 0oC, whereas gold melts at 1,064oC.
use your book
chang to differ formes
They start to get closer together