How do you change the pH of something?

to make it closer to 0 to you add lemon juice or to make it basic do you add baking soda in solution?How do you change the pH of something?
baking soda to make it basic. you should know this.How do you change the pH of something?
Need to neutralize it. If acid add a base, if base add acid. You just have to be careful as the reaction is likely to be exothermic and, in some cases, violent. Check compatibility charts.
pH is better known as how acidic or basic something is. Acid has a low pH and base has a high pH. pH is really a mathematical term meaning -log[H+] or -log of the concentration of hydrogen ions. pH is something you learn about in general chemistry in high school and college. You find yourself doing some math problems and using acids and bases to bring some solution to a given pH or adding acid and bases to a solution and taking a plethora of measurements to determine the buffering capacity. (This latter procedure involves opening the spigot on the acid/base solution and trying to hit the pH you're looking for as quickly as possible, usually you overshoot, have to add the opposite acid/base, and repeat).