Oxygen and copper are examples of what? two substances with identical atoms. two different molecules. two different elements. atoms that can’t combine to form compounds.

How do you lengthen a pattern piece? (family and consumer science, sewing)

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor