If a balance reads 6.4 g what is the range of possible masses that this represents? If the balance reads 6.47 g what is the range? Which range is smaller?

Explain why scientists use shared characteristics to make cladograms.

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.

How are the terms group and period used on the periodic table