Agroup of charged, covalently bonded atoms are known as a. isotopes b. compounds c. polyatomic ions d. pure substances

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Which element would mostly likely have an electron affinity measuring closest to zero

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.