Which sentence best describes how scientists plan out their experiments? A. They form a hypothesis.
B. They ask a scientific question.
C. They form a specific theory.
D. They use the scientific methosh

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?