substances
the noble gases
They are called compounds.
Compounds are one or more elements combined to make a compound. Like H2o is oxygen and hydrogen combined.
Compounds are found in units called molecules, which consist of two or more atoms bonded together. These molecules can be composed of the same element or different elements, forming various types of compounds. In solid compounds, the units may also be referred to as formula units, particularly when dealing with ionic compounds.
Copper, Silver, and Gold occur as elements instead of compounds.
The elements and compounds to the right of the equations are called products.
Mixture.
Noble gases
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
Atoms of different elements can " stick together " ( making compounds ) via elements sharing or trading arrangements called
oxides
Chemical compounds are formed from chemical elements.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
This would be called an element, or a mono-atomic compound.
chemistry