Which is the most accurate description of compounds?
O A) They are not pure substances.
OB) They are made of only 1 type of atom.
OC) They are the basic building blocks of matter.
They are made up of atoms of 2 or more elements that are
chemically combined.
OD) chemically

For which pair of objects would adding the same a

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around