Acids & Bases PDF

### 5.1 Acids & Bases Tuesday, April 11, 2017 12:56 PM ### Acids - usually starts with 'H' (hydrogen) - ends with "...ic acid" - sour to the taste - corrosive (burns your skin) - pH less than 7 - good electrical conductors ### Bases - Usually ends with "OH" (hydroxide) - bitter to the taste -...

### 5.1 Acids & Bases Tuesday, April 11, 2017 12:56 PM ### Acids - usually starts with 'H' (hydrogen) - ends with "...ic acid" - sour to the taste - corrosive (burns your skin) - pH less than 7 - good electrical conductors ### Bases - Usually ends with "OH" (hydroxide) - bitter to the taste - pH more than 7 - good electrical conductors ### pH Scale - a # scale for measuring how acidic or basic a solution is when dissolved in water. | | | | | | :-------- | :-------- | :---- | :-------- | | ACID | | 4, 5 | NEUTRAL | | 0 | | 6 | 7 | | more acidic | ←← | | → more basic | | | | | 14 | | | | | BASE | - one unit change on the pH scale represents a 10x change in strength of the solution. ex. pH drops from pH 6 → pH 4 = 2 units = 102 =100 x more acidic (less basic) ### pH Indicators - chemicals that change Colour depending on the pH of the solution ex. litmus paper → red = acidic → blue = base ex. universal indicators (fig. 5.6) Chapter6 Page 1