yes. It can also be represented as a chemical formula.
Formulas of pure elements are found in the Periodic Table. Hydrogen is an element and its formula is H. Oxygen is O and Calcium is Ca. Other examples include Iron (Fe) and Silver (Ag).
It is either compound or element
element
element
Carbon is a pure substance with the chemical symbol "C"
Cement is not pure substance it is a mixture, so no "chemical formula"
In a chemical equation, a substance in water solution is denoted by the subscript (aq). For example, aqueous potassium chloride would be represented in an equation as KCl(aq)
Copper is a metallic element with the symbol Cu (29) and in its pure form contains only atoms of Copper. It is a pure substance. In addition, Copper is a soft metal and can be mixed with other metals to create alloys.
Mercury is pure. On the periodic chart of elements it is listed as element number 80 and is represented by the symbol "Hg."
Silicon is an element. Its symbol is Si.
Copper is a pure substance.
yes
element
that is correct
Carbon is a pure substance with the chemical symbol "C"
Carbon is an element and it is represented by the letter C.
Pure Tin is a metallic element with the symbol Sn.Tin is always pure. Tin is not a mixture, but it may be a part of a mixture, like in bronze
This is not a pure substance, so there's none
The O is a symbol for the element oxygen.
Mercury is a "pure substance" in the sense that is an naturally occuring element on the Periodic Table. However, it can combine with some other elements in nature and so may not be found in its pure form. cinnabar (HgS) is a common form. That's 1 Mercury atom + 1 Sulfur atom.