The first method of determining the chemical composition of substances in space was to O analyze starlight transmitted to Earth
O capture data returned by robotic vehicles
O record radar data from satellites
O analyze rocks brought back from the moon

Nonmetal halogen family atmoic mass 35

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.