what is the difference between a chemical and a gas?

Answer 1

A chemical is a specific _configuration of matter_ in the form of electrons and nucleons (protons and neutrons). Whether or an atom or a molecule, how the atoms are joined, and what orbitals are left describes the chemical. For instance, Water, H20 is a chemical because it distinctly consists of two hydrogen atoms bonded to an oxygen atom, with some extra valence pairs that "stick out".

A chemical can be changed. For instance, you combust oxygen and carbon to get carbon dioxide. The result is a new chemical. This is called a chemical change.

Now, a gas is a _phase of matter_, that is, it describes how the chemical (a specific configuration of matter) behaves in a group. Gas, for instance, is a phase of matter in which the particles are moving fast enough to float free of gravity, and fill any volume. If you slow them down enough, condensation results (changing from a gas to a liquid). In this case, the molecules are not moving fast enough to escape gravity , so tend to fall down and stick together to fill a container. Slow them down even more (freezing), and they become solid, take on a definite volume and don't change.

Changing ice to water to vapor, however, no chemical change happens, but rather a physical change.

Over all, the difference between a gas and a chemical is an excellent example of the differences between chemical and physical changes.

Answer 2

Gas is a state dependant on temperature and pressure.
A chemical is an element or compound.

So you can have water (a chemical compound) that is solid (ice), liquid (water) or steam (gas).
Whether a chemical or element is a gas depends on pressure (the lower the pressure, the more easily it can become a gas) and temperature (the higher the temperature the more easily it can become a gas).

Answer 3

A chemical can take one of three forms - solid, liquid or gas. A gas is just one of those forms a chemical can be in.
An example - water.
Solid - its ice, liquid - its water. Gas - its steam.
Hope that helps sort it out for you.

Answer 4

a chemical is any group of molicules that react
a gas is elements that are in the highest energy state that is stable on earth
chemicals can be in gasous form, and are then sometimes refered to as simply a gas, or toxic gas, or a chemical gas
the things that are commenly refered to as a chemical are often in liquid form or mixed into a liquid solution

Answer 5

Chemical is spelled CHEMICAL and gas is spelled GAS.