The point along a planet's orbit where it is closest to the sun is called the

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.

Fossil fuels are organic compounds that are made from

Which of the following molecules is polar? c3h7oh c2h5cooh