Â· just now. Report Abuse. A pulled muscle is more of a strain--the muscle has been stretched too far and causes pain. A muscle spasm is when a muscle is irritated for whatever reason and keeps moving on its own, sudden involuntary contractions. You can have both at the same time, though. Me Â· 8 years ago.
Sharpie-a pen with indelible ink that will write on any surface. pen-a writing implement with a point from which ink flows. trademark-a formally registered symbol identifying the manufacturer or distributor of a product.
How Does It Work. This is really a lesson in the concepts of solubility, color mixing, and the movement of molecules. The Sharpie markers contain permanent ink, which will not wash away with water. Permanent ink is hydrophobic, meaning it is not soluble in water. However, the molecules of ink are soluble in another solvent called rubbing alcohol. This solvent carries the different colors of ink with it as it spreads in a circular pattern from the center of the shirt.