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)

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.