When silicon-27 is bombarded with a neutron, a gamma ray is emitted. What radioactive isotope is produced?
O aluminum-27
O silicon-28
O silicon-27
O magnesium-27

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.