pure form
Gold is used usually in pure form or as an alloy.
It is a compound
Platinum is usually found pure.
Calcium is never found in its elemental form in nature.
In its pure form it is a compound: sulphuric acid. But usually it is a mixture of sulphuric acid and lead sulphate.
In pure form.
Gold is used usually in pure form or as an alloy.
It is a compound
Usually it is found in compound form but can easily as a pure element, just depends on the conditions
Platinum is usually found pure.
Calcium is never found in its elemental form in nature.
In its pure form it is a compound: sulphuric acid. But usually it is a mixture of sulphuric acid and lead sulphate.
In nature, titanium is always found as a compound, not as a pure metal. Titanium is highly reactive (although less reactive alloys can be made from it).
It is a pure element, though if you are talking about sulfur in its natural form (S8), then yes it is a pure compound.
Technetium is found in both in a compound and pure forms
Is oxygen a form of mixture form, compound form, or mixture form
Neither. It is an element. Also, by definition if a substance is pure it cannot be a mixture; it mus either be an element or a compound.