Which pm the following are likely to form a covalent bond

gold and oxygen
magneisuim and gold
oxygen and oxygen
magneisium and oxygen

Which planet do you think would be easiest for humans to colonize some day?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

Identify the type of heat transfer occurring when chocolate melts in your hand