The Scanning Electron Microscope, or SEM, uses beams of residue from bullets or ink from a ransom note.

Electricity

Protons

Neutrons

Electrons

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Use the periodic table to classify each of the elements below. cadmium (cd): vanadium (v): xenon (xe): iodine (i): potassium (k): strontium (sr):

What is the mass in grams of 0.94 moles of sodium bicarbonate, nahco3?