Question

question 28 1 pts acids release hydrogen ions. have a ph above 7. take up hydroxyl ions. release hydrogen ions and have a ph above 7. question 29 1 pts electrolytes are: organic compounds. called cations if they have a negative charge. called cations if they have a positive charge. both a and b. question 30 1 pts the reaction between hydrogen and oxygen needed to form water is an example of a: hydrogen bond. synthesis reaction. decomposition reaction. none of the above is correct.

Explanation:

• Question 28: Acids are substances that release hydrogen ions in solution. A pH above 7 indicates a base. Bases take up hydrogen ions or release hydroxyl ions. So, acids release hydrogen ions.
• Question 29: Electrolytes are substances that dissociate into ions in solution. Positively - charged ions are called cations, and negatively - charged ions are called anions. They are not necessarily organic compounds.
• Question 30: A synthesis reaction is a type of reaction where two or more substances combine to form a single product. Hydrogen and oxygen combine to form water, which is a synthesis reaction. A hydrogen bond is an intermolecular force, and a decomposition reaction is the opposite of a synthesis reaction where a single compound breaks down into two or more substances.

Answer:

• Question 28: release hydrogen ions.
• Question 29: called cations if they have a positive charge.
• Question 30: synthesis reaction.