Formative true/false exercise

Acids, bases, pH, pOH, pKa, dissociation of water, neutralization

The following are a series of true false questions that are a preview of the chapter content. The answers are on the following page. This is an inventory of your prior knowledge.

1.	Ammonia dissolved in water, NH3(aq), is a common household base.
2.	Acid solutions have a high pH.
3.	Oxides of metals like CaO form basic solutions when dissolved in water.
4.	Pure water is neutral because it contains no hydronium or hydroxide ions.
5.	An example of a strong acid is hydrochloric acid.
6.	Neutral solutions have equal numbers of H+ ions and OH- ions.
7.	The pH scale has a range from 1 to 14.
8.	Acids are sources of H+ or hydronium ions.
9.	Binary acids are aqueous solutions of compounds like HCl, H2S, HBr.
10.	A polyprotic acid like sulfuric acid H2SO4 releases both H+ ions at the same time.
11.	Nonmetal oxides like SO2 and CO2 combine with rain water to form acid precipitation.
12.	A pH of "7" is neutral for water solutions at 25o C.
13.	Weak acids do not react with bases.
14.	Traditional acids like HCl(aq) react with traditional bases like NaOH(aq) to form water and a salt.
15.	The use of the term (aq) means a substance is dissolved in water.
16.	Acids are not found in nature.
17.	Seawater is neutral with a pH of "7".
18.	Human blood is acidic with a pH below "7".
19.	All acids that contain oxygen have a weak bond between hydrogen and oxygen.
20.	Hydroxide ions, OH1-, are released in water solutions of traditional bases.