Magnesium and calcium are in group 2 of the periodic table.
They are less reactive than the metals in group 1.
(a) Calcium reacts with water to form calcium hydroxide, Ca(OH),, and hydrogen, Hz.
Ca(s) + 2H2O(l) → Ca(OH),(s) + H2(g)
Describe what would be seen when a piece of calcium is dropped into a
container of water.
(2)

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.