Acid react metal to yield hydrogen gas. Web The pH value of acid is from 0-6. Acids Bases Visual Perfecta Template Teaching Chemistry Chemistry Lessons Physical Science Lessons Acid metal salt hydrogen. . Web Bases willingly accept Hydrogen atoms. Web Acids are referred to as chemical substances characterized by a sour taste in an aqueous medium. Web Chemical Properties of bases. Generally acids exist in liquid. The following are the chemical properties of the base. The physical properties of acids. Litmus colour changes from red to blue due to the bases. HCl H 2 O l H 3 O aq Cl. Bases change the colour of litmus from red to blue. Acids react with bases. They are corrosive in nature. Web Acids and bases react with a wide range of chemical compounds to form salts. They have a bitter flavour. Web Chemical Properties of Acids and Bases. Web Chemical properties of acids. ...