The purest possible sand contains only silicon and oxygen.
All pure metals are chemical elements; alloys are not elements.
Compounds is a pure chemical substance made of two different elements. Elements is pure chemical substance containing only one atom.
Chemical elements are not mixtures (I do not think to the isotopic composition).
All substances which are not pure elements are chemicals.
It tells you the elements and the proportions of those elements that are present to make the pure substance.
Hydrogen and chlorine are chemical elements. They are pure substances because they are made up of only one type of atom. Hydrogen is the simplest element with atomic number 1, while chlorine is a halogen with atomic number 17.
the chemical formula for sand is SiO2, so it is a compound, made from Silicon and Oxygen
Sand that has been run through a chemical processor of some kind so it is really pure and in its softest state.
because the elements are pure so I can says to element 'pure'
The elements of a compound are the chemical bonds that are present in a specific ratio in a compound. Elements are pure chemical substances that are made of the same atom.
Hydrogen and chlorine are chemical elements, not compounds
True. A pure compound can be broken down into two or more different kinds of pure elements through chemical reactions. These elements can then exist independently and have their own unique properties.