Do you agree or disagree with this statement, "The total number of
atoms does not change in a
chemical reaction and therefore
mass is conserved"? Explain your
stance using evidence from the
previous slides.

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Adepositional also feature that forms where a stream enters a lake or an ocean is a