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# Acids, Bases, & pH (Grade 8)

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## Acids, Bases, & pH

1.
The strength of an acid is based on the concentration of                in the solution?
1. sulfate ions
2. hydroxide ions
3. hydronium ions
4. phosphate ions
2.
Aqueous solutions containing bases are often called
3.
The strength of an acid or base in a solution is measured on a scale called a
4.
Which of the following choices would be classified as a base?
1. $H_2SO_4$
2. $Mg(OH)_2$
3. $H_2CO_3$
4. $CH_3COOH$
5.
Solutions with a pH of seven (7) are said to be
6.
Getting bit by a fire ant is painful. 1. What causes it to be painful? 2. What is something from the kitchen or bath that you could use to help ease the pain? 3. Why would this work?

7.
Which of the following compounds is an organic acid?
1. $CH_3COOH$
2. $CH_3COCH_3$
3. $CH_3(CH_2)_4CH_3$
4. $CH_3(CH_2)_8CH_3$
8.
A reaction between an acid and a base is called
1. catalyzation
2. nitrification
3. neutralization
4. polymerization
9.
Which formula represents a strong acid?
1. $H_2SO_4$
2. $H_2CO_3$
3. $CH_3COOH$
4. $CCl_3COOH$
10.
To calculate the pH of an aqueous solution you need to know the concentration of the                 in moles per liter and then use the formula expression $pH = - log [H_3O +]$
1. sulfate ion
2. hydroxide ion
3. hydronium ion
4. phosphate ion
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