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Study Guide Answers

1.     Scientists use what is known as a(n) ____________ scale to measure the strength of acids and bases.
     pH
2.     The scale referred to in the question above ranges numerically from ___________ to _________.
     1, 14
3.     ____________________ are located between 1 and 6 on the scale.
     Acids
4.     _______________________ are any number above 7.
     Bases
5.     Seven is considered to be ___________________________.
     neutral
6.     An indicator is a(n) ________________________ dye.
     organic
7.     An indicator's color depends on the concentration of __________________________ions in the solution being tested.
     hydronium
8.     If the solution is an acid, litmus paper turns _____________________ and if it is a base, the litmus turns _______________________.
     red, blue
9.     In a(n) ___________________________ solution, there are fewer hydrogen ions present.
     proton
10.     According to the Bronsted-Lowry Theory, an acid is defined as being a(n) _____________________ donor.
     proton
11.     The Lewis Theory uses a(n) ________________________ perspective to define acids and bases.
     basic
12.     Conjugate acid-base pairs are species that differ by one _____________________________.
     electron
13.     The process known as _______________________ occurs when acids and bases combine and they seek some type of stable state by forming salt and water.
     neutralization
14.     A solution can have both a pH and pOH value. True or false?
     true
15.     The _________________ scale is concerned with hydroxide ions.
     pOH
16.     Moving down a column on the Periodic Table, do the number of shells around the nucleus of an atom increase or decrease?
     increase
17.     When atoms bond, the strength of the bond depends upon the number of shells between each atom. The higher the bond strength, the _______________________ the acid.
     weaker
© Educational Video Network, Inc. 2005 - www.evndirect.com
Your leading source for curriculum-based educational videos and DVDs.