Fill in the Blanks Acids & Bases QuizOnline version Introduction to Acids and Bases by ABIGAIL DIANNE LAGRADA 1 basicity volume temperature acidity solubility density pH is a quantitative measurement of or of a liquid . 2 absorbing donating accepting rejecting disolving An acid is any hydrogen - containing substance that is capable of a proton ( hydrogen ion ) to another substance . 3 acid giving rejecting disolving absorbing accept Base is a molecule or ion able to a hydrogen ion from an . 4 tissue paper filter paper litmus dye A strip of paper that is chemically treated with a dye named . 5 pink yellow Blue red violet violet yellow green pink blue green red litmus paper turns under acidic conditions , and litmus paper turns under basic or alkaline conditions .