Exercise 57 Page 113

We have been also given three statements that we will write in if-then form.

• Acids contain hydrogen (H).
• Bases contain hydroxide (OH).
• Hydrocarbons contain only hydrogen (H) and carbon (C).

Let's start with highlighting the $\text{hypothesis}$ and the $\text{conclusion}.$ Notice that there can be more than one way to do that but we will show only one way.

• $\text{Acids contain}$ $\text{hydrogen (H).}$
• $\text{Bases contain}$ $\text{hydroxide (OH).}$
• $\text{Hydrocarbons contain}$ $\text{only hydrogen (H)}$ $\text{ and carbon (C).}$

Now that we see the $\text{hypothesis}$ and the $\text{conclusion}$ clearly, we can write the statements in if-then form. Remember that the $\text{hypothesis}$ comes after if and the $\text{conclusion}$ comes after then.

• If $\text{a compound is an acid},$ then $\text{it contains hydrogen (H).}$
• If $\text{a compound is a base},$ then $\text{it contains hydroxide (OH).}$
• If $\text{a compound is a hydrocarbon},$ then $\text{it contains only hydrogen (H)}$ $\text{ and carbon (C).}$