What could j. j. thomson conclude from his experiments?
a)atoms are mostly empty space.
b)most of the mass of the atom is concentrated in the center.
c)atoms must balance positive and negative particles.
d)atoms are indivisible.

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

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.

What natural processes produce large quantities of co2