In which direction on the periodic table, horizontal or vertical, are elements with similar chemical properties aligned? what are families of elements with similar chemical properties called?

Mercury (Hg) poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 0.

Select the correct answer. Why does every chemical reaction require a certain amount of activation energy? O A Energy is released when the reactants begin to react. O B. Energy lost to the environment during the reaction must be replaced.

Explain why water does not heat up or cool off as quickly as air does.

What happens when a cell is placed in a hypotonic solution?

What is the cause of dipole interactions? A sharing of electron pairs B attraction between polar molecules C bonding of a covenant bonded hydrogen to an unshared electron pair D attraction between ions

What is the correct term for water Atom element product reactant

Do carbon atoms gain, lose, or share electrons?

In aqueous solution the ag ion forms a complex with two ammonia molecules. Write the formation constant expression for the equilibrium between the hydrated metal ion and the aqueous complex.

Which samples are substance? (A) HCI (aq) (B) NaCI (aq) (C) HCI (g) (D) NaCI (s)

2. If you add water to dilute a solution, what happens to the molarity of the compound in the solution? Explain