The science of molecules and and their is called chemistry

Which element is the least metallic between cadmium, silver, zinc, or iron?

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

What metric units would you use to measure the thickness of a key