Question

State whether the following properties are those of acids, alkalies or both.
(a) sour taste
(b) pH value greater than 7
(c) changes the colour of litmus
(d) soapy to touch
(e) remains colourless in phenolphthalein
(f) may be strong or weak
(g) neutralises bases
(h) dangerous to handle
(i) usually react with metals
(j) turns red in the presence of turmeric

Answer 1

(a) sour taste	acids
(b) pH value greater than 7	bases
(c) changes the colour of litmus	acids and bases
(d) soapy to touch	bases
(e) remains colourless in phenolphthalein	acids
(f) may be strong or weak	acids and bases
(g) neutralises bases	acids
(h) dangerous to handle	acids and bases
(i) usually reacts with metals	acids and bases
(j) turns red in the presence of turmeric	bases