Which part of the atom determines its chemical properties? a. nucleus b. proton c. neutron d. electron

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

In pqr m< p=60 m< q= 30 and m

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.