On a typical pH test, acids will be yellow-red, a neutral solution will be green and basic solutions will be darker shades of green.
Strong acids include HCl and HBr. Weak acids include HF and HC2H3O2. Also, lemon juice is a weak acid. A neutral solution has equal hydroxide and hydronium concentrations, so it could be a mixture of a strong and weak acid, or water. Basic solutions are soaps. A strong basic solution would be NaOH, CaOH2, etc. Drain de-clogger is an example.
I suggest you pay attention in class, or read in your book, next time. Paying attention to chemistry is extremely important.
Strong acids include HCl and HBr. Weak acids include HF and HC2H3O2. Also, lemon juice is a weak acid. A neutral solution has equal hydroxide and hydronium concentrations, so it could be a mixture of a strong and weak acid, or water. Basic solutions are soaps. A strong basic solution would be NaOH, CaOH2, etc. Drain de-clogger is an example.
I suggest you pay attention in class, or read in your book, next time. Paying attention to chemistry is extremely important.