Calcium belongs to group 2 of the periodic table, therefore the most likely when linked is that:
a) gain 2 electrons
2) share 2 electrons
3) lose 2 electrons
4) gain 6 electrons

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

Compare and contrast physical changes with chemical changes.

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma