Question

read the text. you have probably heard of the ph scale, which measures how acidic or basic different solutions are. a solutions acidity or basicity is related to its concentrations of hydronium ions and hydroxide ions. when a strong acid is added to a solution, atoms in the solution break apart to form hydronium ions. this leads to a more acidic solution. when a strong base is added to a solution, atoms in the solution break apart to form hydroxide ions. this results in a more basic solution. match causes with their effects. the solution becomes more acidic. the solution becomes more basic. cause: hydronium ions form in the solution. hydroxide ions form in the solution. effect

Explanation:

The text states that when hydronium ions form in a solution, it becomes more acidic. When hydroxide ions form in a solution, it becomes more basic.

Answer:

Hydronium ions form in the solution - The solution becomes more acidic.
Hydroxide ions form in the solution - The solution becomes more basic.