Compare and contrast covalent and ionic compounds.

Ionic compounds:
•Have molecules that consists of charged ions and these ions have positive and negative charges.
• ionic compounds are formed by electrical attraction of two of more ions
• ionic compounds have a high melting & boiling points
• the bonds of ionic compounds are crystal like
• can conduct electricity in water
Covalent compounds:
• they are non metals bound together & consist of two electrons shared between two atoms
• formed when two non metals bound together
• they have lower melting and boiling point
• they easily separate because they are formed from distinct molecules that don’t bond together
• covalent compounds are softer and more flexible
• covalent compounds cannot conduct electricity under water because they are non polar

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.