Relative to the mass of the nucleous of a atom. the mass of electron is

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

May someone me with these science questions

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.