Compound?
A mixture.
Properties
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.
Neon is chemically inert and doesnt combine with lithium
These elements will not combine chemically.
compound is when two or more elements combine chemically
Elements chemically combine to make molecules.
Their chemical composition
yes
Compound
sodium and helium
Compound?
A mixture.
No. helium is chemically inert and does not combine with other elements.
compound
molecules