You may have noticed an error in your results. If you measured a rectangular ingot, the corners are rounded. On both coins and ingots, the edges are thicker than the rest of the object. Explain how these errors will affect your calculated density compared to the actual density.

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

it is stable as it is in group 0 which have full outer shells of electrons

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.