WorksheetsAcid & Bases II
Total questions: 15
Worksheet time: 1hrs 15mins
Which of the following statements are true about acids?
I Acid solutions have pH values less than 7.
II Acids can react with metals to produce hydrogen gas.
III Acids can react with all bases to produce carbon dioxide gas.
IV Acids will change blue litmus paper into red.
I, II and III
I, II and IV
I, III and IV
II, III and IV
Which of the following are true about bases?
I Bases are oxides and hydroxides of metals.
II Most of the bases are not soluble in water.
III Reaction of bases and water is known as neutralisation.
IV Bases that are soluble in water are known as alkalis.
I, II and III
I, II and IV
I, III and IV
II, III and IV
Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker
is a base.
has a neutral pH.
is an acid.
does not have a pH.
Many cleaning solutions are bases. Which of the following is a property of most bases?
feels slippery
white color
can only be liquid
tastes sour
You know you a chemical reaction has occurred if
there is a precipitate.
there is a color change.
there is a temperature change.
All of these answers are evidence.
The pH value of an acid represents its __________ of positive ions in the solution
amount
concentration
color
charge
Solutions that have more OH– ions than H+ ions are
acids
bases
enzymes
neutral
LiOH + H2SO4 -->
How does diluting an acid with water affect ist pH?
The pH decreases towards 7
The pH increases towards 7
The pH decreases towards 1
It has no effect on the pH
The products of a neutralization reaction are usually...
salt and water
an acid and a base
a neutral solution
carbon dioxide and oxygen
Zn(OH)2 + HNO3 ---> H2O + Zn(NO3)2
Which of the following is most acidic:
pH of 4
[H+] = 1.0 x 10 -2
[H+] = 1.0 x 10 -13
[OH-] = 1.0 x 10 - 6
