Which radioactive material is
the stable isotope & the
unstable (reaction) isotope?

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion