Explain what happens in convection currents in complete sentences. Explain the motion of heated and cooling liquids. Also, make sure you include what happens to the plates on top of the currents.

Compare and contrast physical changes with chemical changes.

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays

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.