The chemical formula for copper sulfate is CuSO4
An element is just consisted of one type of atom and cannot be broken down by chemicals (Ex. Oxygen just has the oxygen molecule)
A compound is when there's a mixture of atoms and can be broken down by chemicals (Ex. NaCl is made up of sodium and chloride atoms)
A mixture is a portion of matter made up of two or more substances called constituents. Mixtures are the product of the mechanical joining of substances without change in chemical nature, and therefore, each constituent retains its properties.
the option 4
By there pH . a pH below 7 is acidic . Above 7 is basic. If it’s right at 7 it’s neutral.
It's b. calcium
because the outer electron structure in all of that element is similar, they have the same chemical and physical properties.<span />
