Question

How would a scientist go about determining if an unknown substance is an element, compound, solution, or heterogeneous mixture?

Compare and contrast ionic and covalent compounds

If you were traveling through space and landed on a different planet, how would your mass and weight compare to their values on earth? Why?
List five physical properties.

Answer 1

each of more than one hundred substances that cannot be chemically inter converted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms. thats part of one