they all contain 2 substances or more
it is an element as it contains same kind of atoms
Neither mixture nor compound, it is an element
A compound contain elements chemically bonded.A mixture contain two or more compounds; they can be separated by physical procedures.An element is formed only from similar atoms, having the same number of protons.
Blood is a mixture containing plasma and blood cells.
A compound contain elements chemically bonded.A mixture contain two or more compounds; they can be separated by physical procedures.An element is formed only from similar atoms, having the same number of protons.
It is a diatomic element. As such, it would be a solution. It is not a heterogenous mixture because heterogenous means nonuniform. N2 is uniform because it is composed of all the same element in the same proportion. It's a solution.
Salt is a compound because it is composed of sodium and chloride ions that are chemically bonded together in a fixed ratio. It is not an element, suspension, heterogeneous mixture, homogeneous mixture, or colloid.
A compound is a mixture of two or morel types of atoms. An isotope is a single atom of one element with a different number of neutrons. They are not the same thing.
Graphite is made of carbon and only carbon. Blood is composed of water, proteins, ions, and cells. Since there is more than one type of atom, it is not an element. Since there is more than one type of particle, it is not a compound. This makes it a mixture. Since the composition of the mixture doesn't differ significantly between different samples from the same organism on the same day at the same time, it can be called a homogeneous mixture.
silver is an element because, it is a pure chemical substance composed of atoms with the same number of protons.
If calcium and oxygen are in the same container, they would combine to form calcium oxide, which is a compound. Calcium and oxygen individually are elements, but when combined in a fixed ratio, they form a compound with different properties from the elements themselves.
Technically, diamond is neither an element, a compound, or a mixture. Diamond is made up of pure carbon atoms, so it is not a mixture, and a compound by definition requires two or more different elements. The best definition using the above terms is that diamond is a mineral made up of the same element.