All except neon, with atomic symbol Ne, of the entities shown the question by their chemical formulas or symbols can be decomposed by chemical change.
Ne - neon, is an element and also a noble gas. It can not be decomposed by a chemical reaction. All the other substances can be.
Yes, H2O can be decomposed by electrolysis. 2H2O --> 2H2 + O2
A physical change because the substance does not change. It is still H2O, but in a different form.
A chemical change (as opposed to a physical change) is when the actual chemical makeup of a substance changes. For example, Na+Cl->NaCl. A physical change on the other hand would be more along the lines of H2O(s)->H2O(l), (melting ice).
Neither. It defines the substance but does not characterize it.
Ne - neon, is an element and also a noble gas. It can not be decomposed by a chemical reaction. All the other substances can be.
Yes, H2O can be decomposed by electrolysis. 2H2O --> 2H2 + O2
It's a physical change because the substance is the same before and after only changing form. In other words, water's chemical formula is H2O and ice's chemical formula is also H2O, so they are the same substance. Therefore it is a physical change.
A physical change because the substance does not change. It is still H2O, but in a different form.
A chemical change (as opposed to a physical change) is when the actual chemical makeup of a substance changes. For example, Na+Cl->NaCl. A physical change on the other hand would be more along the lines of H2O(s)->H2O(l), (melting ice).
`A physical change is one in which matter is changed into another physical state without changing its chemical constitution(eg-ice melts to water,in both case substance is H2O).A chemical change is where there is a chemical change of the substance during the process(eg-CaCO3 is heated to form CO2 and CaO,here the new substance formed is unrelated chemically to parent substance.)
H2O is the chemical formula of water.
This substance is water, H2O.
Freezing of H2O is a Physical Change.
H2O is not a property, it is a substance with physical and chemical properties.
Neither. It defines the substance but does not characterize it.
H2o is a compound because it retains its own property.