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No, it is not. Formation of solution is a physical change and no chemical reaction is involved in it. A chemical change is a reaction which is irreversible. Consider 20cm cube cube of salt dissolved in 20 cm cube of water. a solution is then formed. Now place the solution in the sun and you'll see that the water will evaporate, leaving salt crystals behind. you can see it is not chemically combined as you can separate it. Note for no confusion that: a chemical reaction is the process during which a substances changes to another but a chemical change is description of the process leading to a new substance.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoMost commonly, oxygen, but others also
Oxygen: iron oxides (e.g. Haemeitite, Maghemite)
Hydrogen and oxygen: Iron oxyhydroxides (e.g. Goethite, akageneite)
Sulphur: Iron sulphide (e.g iron pyrites)
Wiki User
∙ 13y agoIron is not a combination of any other chemicals because it is an element. If heated to sufficient temperatures, it can be combined to form things like steel.
Wiki User
∙ 10y agoAir is mixture of gasses- mainly oxygen and nitrogen- and the gasses are not chemically bonded to other gasses. However, some gasses, such as oxygen, bond to themselves- creating O2.
Wiki User
∙ 13y agoIf you mean "are the elements in salt chemically combined" then yes.
Wiki User
∙ 11y agoNo, they are combined through electrons, and can be split (from molecules to atoms, not splitting atoms themselves; there is no nuclear explosion).
Wiki User
∙ 15y agoIt is a chemical element.
Wiki User
∙ 12y agoAir is physically combined.
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What is formed when elements of matter chemically combined?
Compounds are formed when elements of matter are chemically combined.
Can compounds be physically separated?
it depends on wht compound it its
When do you say a mixture is chemically combined?
Never it is physically combined.
Is a silver tarnish a physical or chemical change?
It is a chemical change. Oxygen from the air combined chemically with the silver to form silver oxide- that is the tarnish.
What is a substance that has 2 chemically combined elements?
molecule
Is a compound combined chemically or physical?
It is chemically combined! :)
What is formed when elemenst of matter are chemically combined?
Compounds are formed when elements of matter are chemically combined.
Example of the mixture?
Anything that is not chemically combined but is in the same substance, i.e. oil in water, air (Nitrogen, Oxygen, Carbon Dioxide, Argon and other gases are not chemically combined.) and there are many more.
What is formed elements of matter are chemically combined?
Compounds are formed when elements of matter are chemically combined.
What is formed when elements of matter chemically combined?
Compounds are formed when elements of matter are chemically combined.
Are molecules several elements combined chemically?
not necessarily. A molecule is multiple atoms combined chemically, but the atoms do not need to be of different elements. A compound is several elements combined chemically though.
Can compounds be physically separated?
it depends on wht compound it its
When do you say a mixture is chemically combined?
Never it is physically combined.
What are composed of 2 or more elements that have been chemically combined?
Two or more elements chemically combined form a compound.
Why air is a mixture while water is a compound?
Because air is not boUnd chemically it is just a mixture of oxygen nitrogen and other gases while water molecules are one oxygen atom combined chemically to two hydrogen atoms
What is a compoud?
chemically combined elemets
What does chemically combined?
Being chemically combined means that two or more different elements are combined through chemical processes. They make new products known as compounds.
