The Atomic Mass - (minus) The Atomic Number tells you the number of protons in an element If an element is an ion, it has more or less neutrons than usual.

Elements in the same vertical column are called Periods.

The 3 groups of the periodic table are metals, non-metals, and gases.

TRUE OR FALSE plzz helppp!!

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