Atom.
An element is said to be chemically reactive when it combines with another element. These two elements will create a new compound.
when a substance can not be chemically reduced
When elements combine chemically compounds are formed. For instance, when hydrogen and oxygen gases chemically combine, water is formed. Note that if a molecule is made up of only one element, it is referred to as an element, not a compound.
substances that cannot be broken down chemically into other substances are
a chemical reaction or an element
An element is said to be chemically reactive when it combines with another element. These two elements will create a new compound.
no, but compounds are made of elements chemically combined.
when a substance can not be chemically reduced
Elements.
mixture as the elements are not chemically bonded :)
a new element
The smallest unit of Matter that retains the property of an element is the atom.
It is an element. Elements are composed of atoms, and atoms of elements combine chemically to form compounds.
Compound. It is two elements chemically combined.
Helium is one element and does not chemically react.
When elements combine chemically compounds are formed. For instance, when hydrogen and oxygen gases chemically combine, water is formed. Note that if a molecule is made up of only one element, it is referred to as an element, not a compound.
substances that cannot be broken down chemically into other substances are