High heat melts a deposit of sedimentary rock, which then hardens into new rock. What kind of rock forms? Explain your answer.

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

Is a pencil falling to the floor anon contact force, a force, or a contact force

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.