It depends. You can have a gaseous mixture such as air, which would be a homogeneous mixture. But a single gas such as oxygen or methane would be a pure substance.
Carbon can mix with oxygen as fine particles in suspension, which will eventually settle out if the mixture remains undisturbed. Since oxygen is a gas at room temperature while carbon is a solid, it is difficult to thoroughly mix them.
in a solution, the atoms of a solid or gas completely separate and mix with the liquid.
Pure argon gas is a homogeneous substance.
When they mix, they form an oxygen gas.
All the elements are homogeneous so the oxygen is homogeneous, too.
Oxygen gas is homogeneous matter.
Neither. The condensation of oxygen gas is a phase change. The oxygen itself would be an element, not a mixture.
Its a compound composed of Two Hydrogen's and 2 Oxygen's.
It depends. You can have a gaseous mixture such as air, which would be a homogeneous mixture. But a single gas such as oxygen or methane would be a pure substance.
No; the given statement is false. The natural atmosphere is largely a homogeneous mixture of oxygen and nitrogen gases, and it has very different chemical properties form any of the compounds formed from nitrogen and oxygen. Distinct such compounds with formulas N2O, NO, NO2, and N2O5 are known and are all chemically different from one another as well as from a homogeneous mixture of oxygen and nitrogen gases.
Yes
Methanol absorbs a minor quantity of oxygen gas and forms a homogeneous solution.
If one chemically reacts oxygen gas and hydrogen gas, any liquid produced is water.
No. Trail mix is a heterogeneous mixture. A homogeneous mixture has a uniform appearance.
Carbon Dioxide
Carbon can mix with oxygen as fine particles in suspension, which will eventually settle out if the mixture remains undisturbed. Since oxygen is a gas at room temperature while carbon is a solid, it is difficult to thoroughly mix them.