What words are used to describe the chemicals along this scale?
Chemicals with pH <7 are called acids and described as acidic.
Chemicals with pH > 7 are called bases and described as basic or alkaline.
Chemicals with pH = 7 are described as neutral.
Why are the colors on the scale what they are?
The colors closely match the colors of pH paper except for at pH 13 and 14 which should continue to get darker blue instead of pink.
What is HCl?
hydrochloric acid
What is stomach acid?
hydrochloric acid
What acid is in lemon juice?
citric acid
What acid is in vinegar?
acetic acid
What is the normal pH of blood?
Blood is slightly basic with a pH of 7.35-7.45, not 8
What chemical is in baking soda?
Sodium bicarbonate
What chemical is in milk of magnesia and what is its chemical formula?
magnesium hydroxide
Magnesium is in group 2 on the periodic table and therefore has a 2+ charge when ionized. The hydroxice ion (OH) has a 1- charge. Therefore, its chemical formula is Mg(OH)2
What chemical is in ammonia and what is its chemical formula?
Ammonia is the name of the chemical. Its formula is NH3
What chemical is in drain cleaner?
Sodium Hydroxide, NaOH
What does H+ represent?
Hydrogen ion
What do the brackets [ ] represent?
They indicate the concentration. In this case, the hydrogen ion concentration
What would the pH of a solution with a hydrogen ion concentration of 10-8 be?
8
What would the hydrogen ion concentration in a solution with pH of 5 be?
10-5
CoMo Science 
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